Sign in
12thPass logo
New chatPYQ LibraryDoubtsRank report
Sign in to see Recents

Your guest activity stays on this device

Sign in to save progress →
Sign in

Capacitor

156 questions · Physics · JEE Main
Guest · filters and generic practice availableBrowsing as a guest · PYQ filters and generic practice are available. Sign in only for personalised features and saved progress.
  1. PYQ Library
  2. /JEE Main
  3. /Physics
  4. /Capacitor

Capacitor

156 questions · Physics · JEE Main

  1. A parallel plate capacitor is filled equally(half) with two dielectrics of dielectric constants ε1​ and ε2​, as shown in figures. The distance between the plates is d and area of each plate is A. If capacitance… Includes diagram2025 · 3 Apr · Shift 1 · Q59 · MCQ
  2. Using a battery, a 100 pF capacitor is charged to 60 V and then the battery is removed. After that, a second uncharged capacitor is connected to the first capacitor in parallel. If the final voltage across the second capacitor is 20 V ,…2025 · 3 Apr · Shift 2 · Q58 · MCQ
  3. Four capacitors each of capacitance 16μF are connected as shown in the figure. The capacitance between points A and B is : ​ (in μF). Includes diagram2025 · 4 Apr · Shift 1 · Q75 · Numerical
  4. Three parallel plate capacitors C1​,C2​ and C3​ each of capacitance 5μ F are connected as shown in figure. The effective capacitance between points A and B, when the space between the parallel plates of C1​… Includes diagram2025 · 4 Apr · Shift 2 · Q62 · MCQ
  5. A parallel plate capacitor has charge 5×10−6C. A dielectric slab is inserted between the plates and almost fills the space between the plates. If the induced charge on one face of the slab is 4×10−6C…2025 · 7 Apr · Shift 2 · Q74 · Numerical
  6. Space between the plates of a parallel plate capacitor of plate area 4 cm2 and separation of 1.77 mm, is filled with uniform dielectric materials with dielectric constants (3 and 5) as shown in figure. Another capacitor of capacitance 7.5… Includes diagram2025 · 8 Apr · Shift 2 · Q73 · Numerical
  7. An electron is made to enter symmetrically between two parallel and equally but oppositely charged metal plates, each of 10 cm length. The electron emerges out of the electric field region with a horizontal component of velocity 106 m/s…2025 · 22 Jan · Shift 1 · Q64 · MCQ
  8. A parallel-plate capacitor of capacitance 40μ F is connected to a 100 V power supply. Now the intermediate space between the plates is filled with a dielectric material of dielectric constant K=2. Due to the…2025 · 22 Jan · Shift 1 · Q67 · MCQ
  9. Which one of the following is the correct dimensional formula for the capacitance in F ? M,L,T and C stand for unit of mass, length, time and charge,2025 · 22 Jan · Shift 2 · Q54 · MCQ
  10. Identify the valid statements relevant to the given circuit at the instant when the key is closed. A. There will be no current through resistor R. B. There will be maximum current in the connecting wires. C. Potential difference between… Includes diagram2025 · 23 Jan · Shift 1 · Q69 · MCQ
  11. At steady state the charge on the capacitor, as shown in the circuit below, is ​μ C. Includes diagram2025 · 23 Jan · Shift 2 · Q74 · Numerical
  12. A parallel plate capacitor was made with two rectangular plates, each with a length of l=3 cm and breath of b=1 cm. The distance between the plates is 3μ m. Out of the following, which are…2025 · 24 Jan · Shift 1 · Q63 · MCQ
  13. Two capacitors C1​ and C2​ are connected in parallel to a battery. Charge-time graph is shown below for the two capacitors. The energy stored with them are U1​ and U2​, respectively. Which of the… Includes diagram2025 · 28 Jan · Shift 1 · Q64 · MCQ
  14. A parallel plate capacitor of capacitance 1 µF is charged to a potential difference of 20 V. The distance between plates is 1 µm. The energy density between plates of capacitor is :2025 · 28 Jan · Shift 2 · Q70 · MCQ
  15. A capacitor, C1​=6μF is charged to a potential difference of V0​=5V using a 5V battery. The battery is removed and another capacitor, C2​=12μF is inserted in place of the battery. When the switch 'S' is closed, the… Includes diagram2025 · 29 Jan · Shift 2 · Q68 · MCQ
  16. A parallel plate capacitor consisting of two circular plates of radius 10 cm is being charged by a constant current of 0.15 A . If the rate of change of potential difference between the plates is 7×108 V/s…2025 · 29 Jan · Shift 2 · Q74 · Numerical
  17. Two identical capacitors have same capacitance C. One of them is charged to the potential V and other to the potential 2 V. The negative ends of both are connected together. When the positive ends are also joined together,…2024 · 1 Feb · Shift 1 · Q74 · MCQ
  18. A galvanometer (G) of 2Ω resistance is connected in the given circuit. The ratio of charge stored in C1​ and C2​ is : Includes diagram2024 · 1 Feb · Shift 2 · Q65 · MCQ
  19. In an electrical circuit drawn below the amount of charge stored in the capacitor is ​μ C. Includes diagram2024 · 1 Feb · Shift 2 · Q82 · Numerical
  20. A parallel plate capacitor of capacitance 12.5 pF is charged by a battery connected between its plates to potential difference of 12.0 V. The battery is now disconnected and a dielectric slab (ϵr​=6)…2024 · 4 Apr · Shift 2 · Q90 · Numerical
  21. The electric field between the two parallel plates of a capacitor of 1.5μF capacitance drops to one third of its initial value in 6.6μs when the plates are connected by a thin wire. The resistance of this wire…2024 · 5 Apr · Shift 1 · Q81 · Numerical
  22. Three capacitors of capacitances 25μF,30μF and 45μF are connected in parallel to a supply of 100 V. Energy stored in the above combination is E. When these capacitors are connected in…2024 · 5 Apr · Shift 1 · Q84 · Numerical
  23. A capacitor of 10μF capacitance whose plates are separated by 10 mm through air and each plate has area 4 cm2 is now filled equally with two dielectric media of K1​=2,K2​=3 respectively as shown… Includes diagram2024 · 6 Apr · Shift 2 · Q84 · Numerical
  24. A capacitor has air as dielectric medium and two conducting plates of area 12 cm2 and they are 0.6 cm apart. When a slab of dielectric having area 12 cm2 and 0.6 cm thickness is inserted…2024 · 8 Apr · Shift 2 · Q71 · MCQ
  25. A capacitor is made of a flat plate of area A and a second plate having a stair-like structure as shown in figure. If the area of each stair is 3A​ and the height is d, the capacitance of the arrangement is : Includes diagram2024 · 9 Apr · Shift 1 · Q72 · MCQ
  26. The charge accumulated on the capacitor connected in the following circuit is ​μC(Given C=150μF) Includes diagram2024 · 27 Jan · Shift 1 · Q89 · Numerical
  27. A 16Ω wire is bend to form a square loop. A 9 V battery with internal resistance 1Ω is connected across one of its sides. If a 4μF capacitor is connected across one of its diagonals, the energy stored by…2024 · 29 Jan · Shift 1 · Q87 · Numerical
  28. In the given figure, the charge stored in 6μF capacitor, when points A and B are joined by a connecting wire is ​μC. Includes diagram2024 · 29 Jan · Shift 2 · Q82 · Numerical
  29. A capacitor of capacitance C and potential V has energy E. It is connected to another capacitor of capacitance 2C and potential 2 V. Then the loss of energy is 3x​E…2024 · 30 Jan · Shift 1 · Q84 · Numerical
  30. A parallel plate capacitor with plate separation 5 mm is charged up by a battery. It is found that on introducing a dielectric sheet of thickness 2 mm, while keeping the battery connections intact, the capacitor…2024 · 31 Jan · Shift 1 · Q83 · Numerical
  31. Given below are two statements: One is labeled as Assertion A and the other is labeled as Reason R. Assertion A : Two metallic spheres are charged to the same potential. One of them is hollow and another is solid, and both have the same…2023 · 1 Feb · Shift 2 · Q52 · MCQ
  32. A parallel plate capacitor with plate area A and plate separation d is filled with a dielectric material of dielectric constant K=4. The thickness of the dielectric material is x, where x<d. Let C1​… Includes diagram2023 · 6 Apr · Shift 1 · Q69 · Numerical
  33. As shown in the figure, two parallel plate capacitors having equal plate area of 200 cm2 are joined in such a way that aeqb. The equivalent capacitance of the combination is x∈0​ F. The value of x is ​… Includes diagram2023 · 6 Apr · Shift 2 · Q66 · Numerical
  34. In this figure the resistance of the coil of galvanometer G is 2 Ω. The emf of the cell is 4 V. The ratio of potential difference across C1​ and C2​ is: Includes diagram2023 · 8 Apr · Shift 1 · Q65 · MCQ
  35. A 600 pF capacitor is charged by 200 V supply. It is then disconnected from the supply and is connected to another uncharged 600 pF capacitor. Electrostatic energy lost in the process is ​…2023 · 8 Apr · Shift 2 · Q66 · Numerical
  36. The equivalent capacitance of the combination shown is : Includes diagram2023 · 10 Apr · Shift 1 · Q51 · MCQ
  37. The distance between two plates of a capacitor is d and its capacitance is C1​, when air is the medium between the plates. If a metal sheet of thickness 32d​ and of the same area as plate is introduced…2023 · 10 Apr · Shift 2 · Q56 · MCQ
  38. A parallel plate capacitor of capacitance 2 F is charged to a potential V, The energy stored in the capacitor is E1​. The capacitor is now connected to another uncharged identical capacitor in parallel…2023 · 11 Apr · Shift 1 · Q58 · MCQ
  39. A capacitor of capacitance C is charged to a potential V. The flux of the electric field through a closed surface enclosing the positive plate of the capacitor is :2023 · 11 Apr · Shift 2 · Q50 · MCQ
  40. In the given circuit, C1​=2μF,C2​=0.2μF,C3​=2μF,C4​=4μF,C5​=2μF,C6​=2μF, The charge… Includes diagram2023 · 11 Apr · Shift 2 · Q68 · Numerical
  41. In the network shown below, the charge accumulated in the capacitor in steady state will be: Includes diagram2023 · 13 Apr · Shift 2 · Q52 · MCQ
  42. In the circuit shown, the energy stored in the capacitor is n μJ. The value of n is ​ Includes diagram2023 · 13 Apr · Shift 2 · Q69 · Numerical
  43. In the given figure the total charge stored in the combination of capacitors is 100 μC. The value of ' x ' is ​. Includes diagram2023 · 15 Apr · Shift 1 · Q65 · Numerical
  44. A parallel plate capacitor with air between the plate has a capacitance of 15pF. The separation between the plate becomes twice and the space between them is filled with a medium of dielectric constant 3.5. Then the capacitance becomes 4x​…2023 · 24 Jan · Shift 2 · Q69 · Numerical
  45. A parallel plate capacitor has plate area 40 cm 2 and plates separation 2 mm. The space between the plates is filled with a dielectric medium of a thickness 1 mm and dielectric constant 5. The capacitance of the system is :2023 · 25 Jan · Shift 1 · Q47 · MCQ
  46. A capacitor has capacitance 5 μ F when it's parallel plates are separated by air medium of thickness d. A slab of material of dielectric constant 1.5 having area equal to that of plates but thickness 2d​ is inserted between…2023 · 25 Jan · Shift 2 · Q67 · Numerical
  47. A capacitor of capacitance 900μF is charged by a 100 V battery. The capacitor is disconnected from the battery and connected to another uncharged identical capacitor such that one plate of uncharged capacitor…2023 · 30 Jan · Shift 1 · Q68 · Numerical
  48. For the given circuit, in the steady state, ∣VB​−VD​∣=​ V. Includes diagram2023 · 31 Jan · Shift 2 · Q68 · Numerical
  49. Two parallel plate capacitors C1​ and C2​ each having capacitance of 10μF are individually charged by a 100 V D.C. source. Capacitor C1​ is kept connected to the source and a dielectric slab is inserted between…2023 · 31 Jan · Shift 2 · Q72 · Numerical
  50. A parallel plate capacitor is formed by two plates each of area 30 π cm2 separated by 1 mm. A material of dielectric strength 3.6 × 107 Vm − 1 is filled between the plates. If the maximum charge that can be stored on the…2022 · 24 Jun · Shift 1 · Q59 · MCQ
  51. If the charge on a capacitor is increased by 2 C, the energy stored in it increases by 44%. The original charge on the capacitor is (in C)2022 · 24 Jun · Shift 2 · Q59 · MCQ
  52. A condenser of 2μF capacitance is charged steadily from 0 to 5C. Which of the following graph represents correctly the variation of potential difference (V) across it's plates with respect to the…2022 · 25 Jul · Shift 1 · Q50 · MCQ
  53. Capacitance of an isolated conducting sphere of radius R1 becomes n times when it is enclosed by a concentric conducting sphere of radius R2 connected to earth. The ratio of their radii (R1​R2​​) is :2022 · 25 Jul · Shift 2 · Q50 · MCQ
  54. Two parallel plate capacitors of capacity C and 3C are connected in parallel combination and charged to a potential difference 18 V. The battery is then disconnected and the space between the plates of the capacitor of capacity C is…2022 · 25 Jul · Shift 2 · Q68 · Numerical
  55. The equivalent capacitance between points A and B in below shown figure will be ​μ F. Includes diagram2022 · 25 Jun · Shift 1 · Q66 · Numerical
  56. Two metallic plates form a parallel plate capacitor. The distance between the plates is 'd'. A metal sheet of thickness 2d​ and of area equal to area of each plate is introduced between the plates. What will be the ratio of the…2022 · 25 Jun · Shift 2 · Q53 · MCQ
  57. The total charge on the system of capacitors C1​=1μF,C2​=2μF,C3​=4μF and C4​=3μF connected in parallel is : (Assume a battery of 20 V is…2022 · 26 Jul · Shift 1 · Q54 · MCQ
  58. A composite parallel plate capacitor is made up of two different dielectric materials with different thickness (t1​ and t2​) as shown in figure. The two different dielectric materials are separated by a… Includes diagram2022 · 26 Jul · Shift 1 · Q67 · Numerical
  59. A source of potential difference V is connected to the combination of two identical capacitors as shown in the figure. When key 'K' is closed, the total energy stored across the combination is E1​. Now key 'K' is opened and… Includes diagram2022 · 26 Jul · Shift 2 · Q53 · MCQ
  60. Two capacitors having capacitance C1 and C2 respectively are connected as shown in figure. Initially, capacitor C1 is charged to a potential difference V volt by a battery. The battery is then removed and the charged capacitor C1 is now… Includes diagram2022 · 26 Jun · Shift 1 · Q50 · MCQ
  61. The charge on capacitor of capacitance 15 μ F in the figure given below is : Includes diagram2022 · 26 Jun · Shift 2 · Q54 · MCQ
  62. A parallel plate capacitor with plate area A and plate separation d = 2 m has a capacitance of 4 μ F. The new capacitance of the system if half of the space between them is filled with a dielectric material of dielectric constant K = 3… Includes diagram2022 · 26 Jun · Shift 2 · Q55 · MCQ
  63. As show in the figure, in steady state, the charge stored in the capacitor is ​×10−6 C. Includes diagram2022 · 27 Jul · Shift 2 · Q60 · Numerical
  64. A parallel plate capacitor with width 4 cm, length 8 cm and separation between the plates of 4 mm is connected to a battery of 20 V. A dielectric slab of dielectric constant 5 having length 1 cm…2022 · 27 Jul · Shift 2 · Q61 · Numerical
  65. A force of 10 N acts on a charged particle placed between two plates of a charged capacitor. If one plate of capacitor is removed, then the force acting on that particle will be.2022 · 27 Jun · Shift 1 · Q55 · MCQ
  66. A capacitor of capacitance 50 pF is charged by 100 V source. It is then connected to another uncharged identical capacitor. Electrostatic energy loss in the process is ​ nJ.2022 · 27 Jun · Shift 1 · Q65 · Numerical
  67. A parallel plate capacitor is made up of stair like structure with a plate area A of each stair and that is connected with a wire of length b, as shown in the figure. The capacitance of the arrangement is 15x​b∈0​A​… Includes diagram2022 · 27 Jun · Shift 2 · Q67 · Numerical
  68. Two capacitors, each having capacitance 40μF are connected in series. The space between one of the capacitors is filled with dielectric material of dielectric constant K such that the equivalence capacitance of…2022 · 28 Jul · Shift 1 · Q55 · MCQ
  69. A slab of dielectric constant K has the same cross-sectional area as the plates of a parallel plate capacitor and thickness 43​ d, where d is the separation of the plates. The capacitance of the…2022 · 28 Jul · Shift 2 · Q48 · MCQ
  70. A capacitor C1 of capacitance 5 μ F is charged to a potential of 30 V using a battery. The battery is then removed and the charged capacitor is connected to an uncharged capacitor C2 of capacitance 10 μ F as shown in figure. When… Includes diagram2022 · 28 Jun · Shift 2 · Q73 · Numerical
  71. Two identical thin metal plates has charge q1​ and q2​ respectively such that q1​>q2​. The plates were brought close to each other to form a parallel plate capacitor of capacitance C. The potential difference between them…2022 · 29 Jul · Shift 2 · Q46 · MCQ
  72. A parallel plate capacitor filled with a medium of dielectric constant 10, is connected across a battery and is charged. The dielectric slab is replaced by another slab of dielectric constant 15. Then the energy of capacitor will :2022 · 29 Jun · Shift 1 · Q56 · MCQ
  73. A capacitor is discharging through a resistor R. Consider in time t1, the energy stored in the capacitor reduces to half of its initial value and in time t2, the charge stored reduces to one eighth of its initial value. The ratio t1/t2…2022 · 29 Jun · Shift 2 · Q49 · MCQ
  74. Co is the capacitance of a parallel plate capacitor with air as a medium between the plates (as shown in Fig. 1). If half space between the plates is filled with a dielectric of relative permittivity ε r (as shown in Fig. 2),… Includes diagram2022 · 30 Jun · Shift 1 · Q51 · MCQ
  75. A capacitor is connected to a 20 V battery through a resistance of 10 Ω. It is found that the potential difference across the capacitor rises to 2 V in 1 μ s. The capacitance of the capacitor is ​μ F.…2021 · 1 Sep · Shift 2 · Q62 · MCQ
  76. For changing the capacitance of a given parallel plate capacitor, a dielectric material of dielectric constant K is used, which has the same area as the plates of the capacitor. The thickness of the dielectric slab is 43​ d,…2021 · 16 Mar · Shift 1 · Q52 · MCQ
  77. In a parallel plate capacitor set up, the plate area of capacitor is 2 m2 and the plates are separated by 1 m. If the space between the plates are filled with a dielectric material of thickness 0.5 m and area 2 m2 (see fig.) the… Includes diagram2021 · 16 Mar · Shift 2 · Q64 · Numerical
  78. A parallel plate capacitor whose capacitance C is 14 pF is charged by a battery to a potential difference V = 12 V between its plates. The charging battery is now disconnected and a porcelin plate with k = 7 is inserted between the plates,…2021 · 17 Mar · Shift 1 · Q64 · Numerical
  79. Four identical rectangular plates with length, l = 2 cm and breadth, b = 23​ cm are arranged as shown in figure. The equivalent capacitance between A and C is dxε0​​. The value of x is ​… Includes diagram2021 · 17 Mar · Shift 1 · Q66 · Numerical
  80. A 2 μ F capacitor C1 is first charged to a potential difference of 10V using a battery. Then the battery is removed and the capacitor is connected to an uncharged capacitor C2 of 8 μ F. The charge in C2 on equilibrium condition is ​μ… Includes diagram2021 · 17 Mar · Shift 2 · Q66 · Numerical
  81. The circuit shown in the figure consists of a charged capacitor of capacity 3 μ F and a charge of μ C. At time t = 0, when the key is closed, the value of current flowing through the 5 M Ω resistor is 'x'μ-A. The value… Includes diagram2021 · 18 Mar · Shift 1 · Q63 · Numerical
  82. A parallel plate capacitor has plate area 100 m2 and plate separation of 10 m. The space between the plates is filled up to a thickness 5 m with a material of dielectric constant of 10. The resultant capacitance of the system is 'x' pF.…2021 · 18 Mar · Shift 1 · Q67 · Numerical
  83. Two equal capacitors are first connected in series and then in parallel. The ratio of the equivalent capacities in the two cases will be :2021 · 24 Feb · Shift 1 · Q61 · MCQ
  84. An electron with kinetic energy K1 enters between parallel plates of a capacitor at an angle 'α' with the plates. It leaves the plates at angle 'β' with kinetic energy K2. Then the ratio of kinetic energies K1 : K2 will be :2021 · 25 Feb · Shift 2 · Q50 · MCQ
  85. A parallel plate capacitor with plate area 'A' and distance of separation 'd' is filled with a dielectric. What is the capacity of the capacitor when permittivity of the dielectric varies as : ε(x)=ε0​+kx, for…2021 · 25 Jul · Shift 1 · Q52 · MCQ
  86. If qf is the free charge on the capacitor plates and qb is the bound charge on the dielectric slab of dielectric constant k placed between the capacitor plates, then bound charge qb an be expressed as :2021 · 25 Jul · Shift 2 · Q54 · MCQ
  87. The material filled between the plates of a parallel plate capacitor has resistivity 200 Ω m. The value of capacitance of the capacitor is 2 pF. If a potential difference of 40 V is applied across the plates of the capacitor, then…2021 · 26 Aug · Shift 1 · Q61 · MCQ
  88. A parallel plate capacitor with plate area A has separation d between the plates. Two dielectric slabs of dielectric constant K1 and K2 of same area A/2 and thickness d/2 are inserted in the space between the plates. The capacitance of the… Includes diagram2021 · 26 Aug · Shift 2 · Q55 · MCQ
  89. Consider the combination of 2 capacitors C1 and C2 with C2 > C1, when connected in parallel, the equivalent capacitance is 415​ times the equivalent capacitance of the same connected in series. Calculate the ratio of…2021 · 26 Feb · Shift 1 · Q44 · MCQ
  90. Calculate the amount of charge on capacitor of 4 μ F. The internal resistance of battery is 1 Ω : Includes diagram2021 · 27 Aug · Shift 1 · Q48 · MCQ
  91. Three capacitors C1 = 2 μ F, C2 = 6 μ F and C3 = 12 μ F are connected as shown in figure. Find the ratio of the charges on capacitors C1, C2 and C3 respectively : Includes diagram2021 · 27 Aug · Shift 2 · Q46 · MCQ
  92. A capacitor of capacitance C = 1 μ F is suddenly connected to a battery of 100 volt through a resistance R = 100 Ω. The time taken for the capacitor to be charged to get 50 V is : [Take ln 2 = 0.69] Includes diagram2021 · 27 Jul · Shift 1 · Q53 · MCQ
  93. In the reported figure, a capacitor is formed by placing a compound dielectric between the plates of parallel plate capacitor. The expression for the capacity of the said capacitor will be : (Given area of plate = A) Includes diagram2021 · 27 Jul · Shift 1 · Q54 · MCQ
  94. Two capacitors of capacities 2C and C are joined in parallel and charged up to potential V. The battery is removed and the capacitor of capacity C is filled completely with a medium of dielectric constant K. The potential difference across…2021 · 27 Jul · Shift 1 · Q61 · MCQ
  95. Match List I with List II. Choose the correct answer from the options given below Includes table2021 · 27 Jul · Shift 2 · Q50 · MCQ
  96. A simple pendulum of mass 'm', length 'l' and charge '+ q' suspended in the electric field produced by two conducting parallel plates as shown. The value of deflection of pendulum in equilibrium position will be Includes diagram2021 · 27 Jul · Shift 2 · Q53 · MCQ
  97. A capacitor of 50 μ F is connected in a circuit as shown in figure. The charge on the upper plate of the capacitor is ​μ C. Includes diagram2021 · 31 Aug · Shift 1 · Q71 · Numerical
  98. A parallel plate capacitor of capacitance 200 μ F is connected to a battery of 200 V. A dielectric slab of dielectric constant 2 is now inserted into the space between plates of capacitor while the battery remain connected. The change…2021 · 31 Aug · Shift 2 · Q63 · Numerical
  99. A 5 μ F capacitor is charged fully by a 220 V supply. It is then disconnected from the supply and is connected in series to another uncharged 2.5 μ F capacitor. If the energy change during the charge redistribution is 100X​J…2020 · 2 Sep · Shift 1 · Q56 · Numerical
  100. A 10 μ F capacitor is fully charged to a potential difference of 50 V. After removing the source voltage it is connected to an uncharged capacitor in parallel. Now the potential difference across them becomes 20 V. The capacitance of…2020 · 2 Sep · Shift 2 · Q50 · MCQ
  101. An ideal cell of emf 10 V is connected in circuit shown in figure. Each resistance is 2 Ω. The potential difference (in V) across the capacitor when it is fully charged is ​. Includes diagram2020 · 2 Sep · Shift 2 · Q61 · Numerical
  102. In the circuit shown in the figure, the total charge is 750 μ C and the voltage across capacitor C2 is 20 V. Then the charge on capacitor C2 is : Includes diagram2020 · 3 Sep · Shift 1 · Q56 · MCQ
  103. A capacitor C is fully charged with voltage V0. After disconnecting the voltage source, it is connected in parallel with another uncharged capacitor of capacitance 2C​. The energy loss in the process after the charge is…2020 · 4 Sep · Shift 2 · Q62 · MCQ
  104. Two capacitors of capacitances C and 2C are charged to potential differences V and 2V, respectively. These are then connected in parallel in such a manner that the positive terminal of one is connected to the negative terminal of the…2020 · 5 Sep · Shift 1 · Q46 · MCQ
  105. A parallel plate capacitor has plate of length 'l', width ‘w’ and separation of plates is ‘d’. It is connected to a battery of emf V. A dielectric slab of the same thickness ‘d’ and of dielectric constant k = 4 is being inserted between…2020 · 5 Sep · Shift 2 · Q41 · MCQ
  106. In the circuit shown, charge on the 5 μ F capacitor is : Includes diagram2020 · 5 Sep · Shift 2 · Q57 · MCQ
  107. For the given input voltage waveform Vin(t), the output voltage waveform V0(t), across the capacitor is correctly depicted by : Includes diagram2020 · 6 Sep · Shift 1 · Q54 · MCQ
  108. A parallel plate capacitor has plates of area A separated by distance 'd' between them. It is filled with a dielectric which has a dielectric constant that varies as k(x) = K(1 + α x) where 'x' is the distance measured from one of… Includes diagram2020 · 7 Jan · Shift 1 · Q47 · MCQ
  109. A 60 pF capacitor is fully charged by a 20 V supply. It is then disconnected from the supply and is conneced to another uncharged 60 pF capacitor in parallel. The electrostatic energy that is lost in this process by the time the charge is…2020 · 7 Jan · Shift 2 · Q42 · Numerical
  110. Effective capacitance of parallel combination of two capacitors C1 and C2 is 10 μF. When these capacitors are individually connected to a voltage source of 1V, the energy stored in the capacitor C2 is 4 times that of C1. If these…2020 · 8 Jan · Shift 1 · Q53 · MCQ
  111. A capacitor is made of two square plates each of side 'a' making a very small angle α between them, as shown in figure. The capacitance will be close to : Includes diagram2020 · 8 Jan · Shift 2 · Q37 · MCQ
  112. Voltage rating of a parallel plate capacitor is 500V. Its dielectric can withstand a maximum electric field of 106 V/m. The plate area is 10–4 m2. What is the dielectric constant is the capacitance is 15 pF? (given ε 0 = 8.86 ×…2019 · 8 Apr · Shift 1 · Q71 · MCQ
  113. A parallel plate capacitor has 1μF capacitance. One of its two plates is given +2μC charge and the other plate, +4μC charge. The potential difference developed across the capacitor is:-2019 · 8 Apr · Shift 2 · Q63 · MCQ
  114. A capacitor with capacitance 5μF is charged to 5μC. If the plates are pulled apart to reduce the capacitance to 2μF, how much work is done ?2019 · 9 Apr · Shift 1 · Q57 · MCQ
  115. Determine the charge on the capacitor in the following circuit : Includes diagram2019 · 9 Apr · Shift 1 · Q66 · MCQ
  116. The parallel combination of two air filled parallel plate capacitors of capacitance C and nC is connected to a battery of voltage, V. When the capacitors are fully charged, the battery is removed and after that a dielectric material of…2019 · 9 Apr · Shift 2 · Q46 · MCQ
  117. A parallel plate capacitor is made of two square plates of side 'a', separated by a distance d (d < < a). The lower triangular portion is filled with a dielectric of dielectric constant K, as shown in the figure. Capacitance of this… Includes diagram2019 · 9 Jan · Shift 1 · Q48 · MCQ
  118. A parallel plate capacitor with square plates is filled with four dielecytrics of dielectrics constants K1, K2, K3, K4 arranged as shown in the figure. The effective dielectric constant K will be : Includes diagram2019 · 9 Jan · Shift 2 · Q48 · MCQ
  119. Figure shows charge (q) versus voltage (V) graph for series and parallel combination of two given capacitors. The capacitances are : Includes diagram2019 · 10 Apr · Shift 1 · Q62 · MCQ
  120. A simple pendulum of length L is placed between the plates of a parallel plate capacitor having electric field E, as shown in figure. Its bob has mass m and charge q. The time period of the pendulum is given by : Includes diagram2019 · 10 Apr · Shift 2 · Q71 · MCQ
  121. A parallel plate capacitor is of area 6 cm2 and a separation 3 mm. The gap is filled with three dielectric materials of equal thickness (see figure) with dielectric constants K1 = 10, K2 = 12 and K3 = 14. The dielectric constant of a… Includes diagram2019 · 10 Jan · Shift 1 · Q61 · MCQ
  122. A parallel plate capacitor having capacitance 12 pF is charged by a battery to a potential difference of 10 V between its plates. The charging battery is now disconnected and a porcelain slab of dielectric constant 6.5 is slipped between…2019 · 10 Jan · Shift 2 · Q56 · MCQ
  123. In the figure shown below, the charge on the left plate of the 10 μ F capacitor is –30 μ C. The charge on the right plate of the 6 μ F capacitor is : Includes diagram2019 · 11 Jan · Shift 1 · Q55 · MCQ
  124. Seven capacitors, each of capacitance 2 μ F, are to be connected in a configuration to obtain an effective capacitance of (136​)μF. Which of the combinations, shown in figures below, will achieve the…2019 · 11 Jan · Shift 2 · Q46 · MCQ
  125. Two identical parallel plate capacitors, of capacitance C each, have plates of area A, separated by a distance d. The space between the plates of the two capacitors, is filled with three dielectrics, of equal thickness and dielectric… Includes diagram2019 · 12 Apr · Shift 1 · Q60 · MCQ
  126. In the given circuit, the charge on 4 μ F capacitor will be : Includes diagram2019 · 12 Apr · Shift 2 · Q60 · MCQ
  127. In the figure shown, after the switch 'S' is turned from position 'A' to position 'B', the energy dissipated in the circuit in terms of capacitance 'C' and total charge 'Q' is : Includes diagram2019 · 12 Jan · Shift 1 · Q54 · MCQ
  128. The charge on a capacitor plate in a circuit, as a function of time, is shown in the figure : When is the value of current at t = 4 s ? Includes diagram2019 · 12 Jan · Shift 2 · Q47 · MCQ
  129. A parallel plate capacitor with plates of area 1 m2 each, are at a separation of 0.1 m. If the electric field between the plates is 100 N/C, the magnitude of charge on each plate is : (Take ε 0 = 8.85 × 10 − 12 N−m2C2​…2019 · 12 Jan · Shift 2 · Q54 · MCQ
  130. In the circuit shown, find C if the effective capacitance of the whole circuit is to be 0.5 μ F. All values in the circuit are in μ F. Includes diagram2019 · 12 Jan · Shift 2 · Q68 · MCQ
  131. The equivalent capacitance between A and B in the circuit given below, is : Includes diagram2018 · 15 Apr · Shift 1 · Q69 · MCQ
  132. A capacitor C1 = 1.0 μ F is charged up to a voltage V = 60 V by connecting it to battery B through switch (1). Now C1 is disconnected from battery and connected to a circuit consisting of two uncharged capacitors C2​=3.0μF and… Includes diagram2018 · 15 Apr · Shift 2 · Q52 · MCQ
  133. A parallel plate capacitor with area 200 cm2 and separation between the plates 1.5 cm, is connected across a battery of emf V. If the force of attraction between the plates is 25×10−6N, the value of V is approximately : (∈o​=8.85×10−12N.m2C2​)…2018 · 15 Apr · Shift 2 · Q58 · MCQ
  134. In the following circuit, the switch S is closed at t = 0. The charge on the capacitor C1 as a function of time will be given by (Ceq​=C1​+C2​C1​C2​​) Includes diagram2018 · 16 Apr · Shift 1 · Q71 · MCQ
  135. A parallel plate capacitor of capacitance 90 pF is connected to a battery of emf 20 V. If a dielectric material of dielectric constant K = 5/3 is inserted between the plates, the magnitude of the induced charge will be :2018 · Shift 0 · Q54 · MCQ
  136. The energy stored in the electric field produced by a metal sphere is 4.5 J. If the sphere contains 4 μ C charge, its radius will be : [ Take : 4π∈0​1​= 9 × 109 N − m2/C2 ]2017 · 8 Apr · Shift 1 · Q59 · MCQ
  137. A combination of parallel plate capacitors is maintained at a certain potential difference. When a 3 mm thick slab is introduced between all the plates, in order to maintain the same potential difference, the distance between the plates is… Includes diagram2017 · 9 Apr · Shift 1 · Q71 · MCQ
  138. In the given circuit diagram when the current reaches steady state in the circuit, the charge on the capacitor of capacitance C will be: Includes diagram2017 · Shift 0 · Q52 · MCQ
  139. A capacitance of 2 μ F is required in an electrical circuit across a potential difference of 1.0 kV. A large number of 1 μ F capacitors are available which can withstand a potential difference of not more than 300 V. The minimum…2017 · Shift 0 · Q54 · MCQ
  140. Three capacitors each of 4 μ F are to be connected in such a way that the effective capacitance is 6 μ F. This can be done by connecting them :2016 · 9 Apr · Shift 1 · Q60 · MCQ
  141. Figure shows a network of capacitors where the numbers indicates capacitances in micro Farad. The value of capacitance C if the equivalent capacitance between point A and B is to be 1 μ F is : Includes diagram2016 · 10 Apr · Shift 1 · Q64 · MCQ
  142. A combination of capacitors is set up as shown in the figure. The magnitude of the electric field, due to a point charge Q(having a charge equal to the sum of the charges on the 4μF and 9μF capacitors), at a point distance 30m… Includes diagram2016 · Shift 0 · Q50 · MCQ
  143. In the given circuit, charges Q2​ on the 2μF capacitor changes as C is varied from 1μF to 3μF.Q2​ as a function of ′C′ is given properly by: (figuresaredrawnschematicallyandarenottoscale)… Includes diagram2015 · Shift 0 · Q58 · MCQ
  144. A parallel plate capacitor is made of two circular plates separated by a distance 5mm and with a dielectric of dielectric constant 2.2 between them. When the electric field in the dielectric is 3×104V/m the charge density…2014 · Shift 0 · Q59 · MCQ
  145. Two capacitors C1​ and C2​ are charged to 120V and 200V respectively. It is found that connecting them together the potential on each one can be made zero. Then2013 · Shift 0 · Q63 · MCQ
  146. The figure shows an experimental plot for discharging of a capacitor in an R-C circuit. The time constant τ of this circuit lies between Includes diagram2012 · Shift 0 · Q54 · MCQ
  147. Let C be the capacitance of a capacitor discharging through a resistor R. Suppose t1​ is the time taken for the energy stored in the capacitor to reduce to half its initial value and t2​ is the time taken for the charge to…2010 · Shift 0 · Q67 · MCQ
  148. A parallel plate capacitor with air between the plates has capacitance of 9pF. The separation between its plates is ′d′. The space between the plates has dielectric constant k1​=3 and thickness 3d​ while the other one has…2008 · Shift 0 · Q73 · MCQ
  149. A battery is used to charge a parallel plate capacitor till the potential difference between the plates becomes equal to the electromotive force of the battery. The ratio of the energy stored in the capacitor and the work done by the…2007 · Shift 0 · Q78 · MCQ
  150. A parallel plate condenser with a dielectric of dielectric constant K between the plates has a capacity C and is charged to a potential V volt. The dielectric slab is slowly removed from between the plates and then reinserted. The…2007 · Shift 0 · Q80 · MCQ
  151. A parallel plate capacitor is made by stacking n equally spaced plates connected alternatively. If the capacitance between any two adjacent plates is ′C′ then the resultant capacitance is2005 · Shift 0 · Q160 · MCQ
  152. A fully charged capacitor has a capacitance ′C′. It is discharged through a small coil of resistance wire embedded in a thermally insulated block of specific heat capacity ′s′ and mass ′m′. If the temperature of the block is raised…2005 · Shift 0 · Q163 · MCQ
  153. A sheet of aluminium foil of negligible thickness is introduced between the plates of a capacitor. The capacitance of the capacitor2003 · Shift 0 · Q166 · MCQ
  154. The work done in placing a charge of 8×10−18 coulomb on a condenser of capacity 100 micro-farad is2003 · Shift 0 · Q169 · MCQ
  155. Capacitance (in F) of a spherical conductor with radius 1m is2002 · Shift 0 · Q140 · MCQ
  156. If there are n capacitors in parallel connected to V volt source, then the energy stored is equal to2002 · Shift 0 · Q162 · MCQ