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

Alternating Current question

2020 · Q155
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. /NEET
  3. /Physics
  4. /Alternating Current
  5. /2020 · Q155

Alternating Current question

2020 · Q155

NEETPhysicsAlternating CurrentMCQ+4 / −1
A 40 μ\muμF capacitor is connected to a 200 V. 50 Hz ac supply. The rms value of the current on the circuit is, nearly :
  1. A
    2.05 A
  2. B
    2.5 A
  3. C
    25.1 A
  4. D
    1.7 A
View written solutionFree

Correct answer: B

irms = Cω\omega ω ε\varepsilonεrms

C = 40 ×\times× 10-6 F

ω\omega ω = 2πf\pi fπf = 100π\pi π

ε\varepsilon εrms = 200 V

irms = 200 ×\times× 40 ×\times× 10-6 ×\times× 2π\pi π ×\times× 50
= 2.5 A

PreviousNext

More from Alternating Current

  • A series LCR circuit is connected to an ac voltage source. When L is removed from the circuit, the phase difference between current and voltage is 3π​. If instead C is removed from the circuit, the phase difference is again 3π​…2020 · MCQ
  • The magnetic potential energy stored in a certain inductor is 25 mJ, when the current in the inductor is 60 mA. This inductor is of inductance2018 · MCQ
  • An inductor 20 mH, a capacitor 100 μF and a resistor 50 Ω are connected in series across a source of emf, V = 10 sin 314 t. The power loss in the circuit is2018 · MCQ
  • Figure shows a circuit that contains three identical resistors with resistance R = 9.0 Ω each, two identical inductors with inductance L = 2.0 mH each, and an ideal battery with emf ε=18V. The current i through… Includes diagram2017 · MCQ
  • A small signal voltage V(t) = V0 sinωt is applied across an ideal capacitor C2016 · MCQ
  • An inductor 20 mH, a capacitor 50 μF and a resistor 40 Ω are connected in series across a source of emf V = 10 sin 340t. The power loss in A.C. circuit is2016 · MCQ
  • Which of the following combinations should be selected for better tuning of an L-C-R circuit used for combination ?2016 · MCQ
  • The potential differences across the resistance, capacitance and inductance are 80 V, 40 V and 100 V respectively in an L-C-R circuit. The power factor of this circuit is2016 · MCQ