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Capacitor

36 questions · Physics · NEET
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Capacitor

36 questions · Physics · NEET

  1. The plates of a parallel plate capacitor are separated by d. Two slabs of different dielectric constant K1​ and K2​ with thickness 83​d and 2d​, respectively are inserted in the capacitor. Due to this, the…2025 · Q177 · MCQ
  2. In the following circuit, the equivalent capacitance between terminal A and terminal B is : Includes diagram2024 · Q171 · MCQ
  3. If the plates of a parallel plate capacitor connected to a battery are moved close to each other, then A. the charge stored in it, increases. B. the energy stored in it, decreases. C. its capacitance increases. D. the ratio of charge to…2024 · Q199 · MCQ
  4. A 12 pF capacitor is connected to a 50 V battery, the electrostatic energy stored in the capacitor in nJ is2024 · Q161 · MCQ
  5. The capacitance of a capacitor with charge q and a potential difference V depends on2024 · Q169 · MCQ
  6. The steady state current in the circuit shown below is : Includes diagram2024 · Q200 · MCQ
  7. The equivalent capacitance of the arrangement shown in figure is: Includes diagram2023 · Q136 · MCQ
  8. To produce an instantaneous displacement current of 2 mA in the space between the parallel plates of a capacitor of capacitance 4 μF, the rate of change of applied variable potential difference (dtdV​)…2023 · Q166 · MCQ
  9. The equivalent capacitance of the system shown in the following circuit is: Includes diagram2023 · Q142 · MCQ
  10. The distance between the two plates of a parallel plate capacitor is doubled and the area of each plate is halved. If C is its initial capacitance, its final capacitance is equal to2022 · Q144 · MCQ
  11. The effective capacitances of two capacitors are 3 μF and 16 μF, when they are connected in series and parallel respectively. The capacitance of two capacitors are :2022 · Q164 · MCQ
  12. A capacitor of capacitance C = 900 pF is charged fully by 100 V battery B as shown in figure (a). Then it is disconnected from the battery and connected to another uncharged capacitor of capacitance C = 900 pF as shown in figure (b). The… Includes diagram2022 · Q170 · MCQ
  13. A parallel plate capacitor has a uniform electric field E in the space between the plates. If the distance between the plates is 'd' and the area of each plate is 'A', the energy stored in the capacitor is : (ε…2021 · Q132 · MCQ
  14. The equivalent capacitance of the combination shown in the figure is : Includes diagram2021 · Q154 · MCQ
  15. The capacitance of a parallel plate capacitor with air as medium is 6μF. With the introduction of a dielectric medium, the capacitance become 30 μF The permittivity of the medium is : (ε0​=8.85×10−12C2N−1m−2)…2020 · Q144 · MCQ
  16. A parallel plate capacitor of capacitance 20 μF is being charged by a voltage source whose potential is changing at the rate of 3V/s. The conduction current through the connecting wires, and the displacement current through the plates…2019 · Q127 · MCQ
  17. The electrostatic force between the metal plates of an isolated parallel plate capacitor C having a charge Q and area A, is2018 · Q157 · MCQ
  18. A capacitor is charged by a battery. The battery is removed and another identical unchanged capacitor is connected in parallel. The total electrostatic energy of resulting system2017 · Q135 · MCQ
  19. A capacitor of 2 μF is charged as shown in the diagram. When the switch S is turned to position 2, the percentage of its stored energy dissipated is Includes diagram2016 · Q130 · MCQ
  20. A parallel-plate capacitor of area a, plate separation d and capacitance C is filled with four dielectric materials having dielectric constants k1, k2, k3 and k4 as shown in the figure. If a single dielectric material is to be used to have… Includes diagram2016 · Q120 · MCQ
  21. A parallel plate air capacitor has capacity C, distance of separation between plates is d and potential difference V is applied between the plates. Force of attraction between the plates of the parallel plate air capacitor is2015 · Q111 · MCQ
  22. A parallel plate air capacitor of capacitance C is connected to a cell of emf V and then disconnected from it. A dielectric slab of dieletric constant K, which can just fill the air gap of the capacitor, is now inserted in it . Which of…2015 · Q115 · MCQ
  23. Two thin dielectric slabs of dielectric constants K1 and K2(K1 < K2) are inserted between plates of a parallel plate capacitor, as shown in the figure. The variation of electric field E between the plates with distance d as measured… Includes diagram2014 · Q120 · MCQ
  24. A parallel plate capacitor has a uniform electric field E in the space between the plates. If the distance between the plates is d and area of each plate is A, the energy stored in the capacitor is2012 · Q95 · MCQ
  25. A parallel plate capacitor has a uniform electric field E in the space between the plates. If the distance between the plates is d and area of each plate is A, the energy stored in the capacitor is2011 · Q162 · MCQ
  26. Two parallel metal plates having charges +Q and −Q face each other at a certain distance between them. If the plates are now dipped in kerosene oil tank, the electric field between the plates will2010 · Q89 · MCQ
  27. A series combination of n1 capacitors, each of value C1, is charged by a source of potential difference 4V. When another parallel combination of n2 capacitors, each of value C2, is charged by a source of potential difference V, it has the…2010 · Q187 · MCQ
  28. Three capacitors each of capacitance C and of breakdown voltage V are joined in series. The capacitance and breakdown voltages of the combination will be2009 · Q174 · MCQ
  29. A parallel plate capacitor has a uniform electric field E in the space between the plates. If the distance between the plates is d and area of each plate is A, the energy stored in the capacitor is2008 · Q164 · MCQ
  30. Two condensers, one of capacity C and other of capacity C/2 are connected to a V-volt battery, as shown in the figure. The work done in charging fully both the condensers is Includes diagram2007 · Q120 · MCQ
  31. A parallel plate air capacitor is charged to a potential difference of V volts. After disconnecting the charging battery the distance between the plates of the capacitor is increased using an insulting handle. As a result the potential…2006 · Q173 · MCQ
  32. A network of four capacitors of capacity equal to C1 = C, C2 = 2C, C3 = 3C and C4 = 4C are connected to a battery as shown in the figure. The ratio of the charges on C2 and C4 is Includes diagram2005 · Q170 · MCQ
  33. Three capacitors each of capacity 4 μF are to be connected in such a way that the effective capacitance is 6μF. This can be done by2003 · Q172 · MCQ
  34. A capacitor of capacity C1 charged upto V volt and then connected to an uncharged capacitor of capacity C2. The final potential difference across each will be2002 · Q130 · MCQ
  35. Energy per unit volume for a capacitor having area A and separation d kept at potential difference V is given by2001 · Q169 · MCQ
  36. A capacitor is charged with a battery and energy stored is U. After disconnecting battery another capacitor of same capacity is connected in parallel to the first capacitor. Then energy stored in each capacitor is2000 · Q126 · MCQ