A capacitor is charged to 200 volt. It has a charge of 0.1 coulomb.

A Capacitor Is Charged To 200 Volt It Has A Physics Question

A capacitor is charged to 200 volt. It has a charge of 0.1 coulomb. When it is discharged, energy liberated will be

Options

(a) 1 J
(b) 4 J
(c) 10 J
(d) 20 J

Correct Answer:

10 J

Explanation:

Energy of capacitor = (1/2) QV

= (1/2) × 0.1 × 200 = 10 J

Related Questions:

  1. Two identical circular coils A and B are kept on a horizontal tube
  2. The self induced e.m.f. in a 0.1 H coil when the current in it is changing
  3. Two particles of masses m₁ m₂ move with initial velocities u₁ and u₂
  4. If t₁ ̷ ₂ is the half-life of a substance, then t₃ ̷ ₄ is the time in which
  5. In a circuit, L,C and R are connected in series with an alternating voltage source

Topics: Electrostatics (146)
Subject: Physics (2479)

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