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Concepts Of Physics MCQ Edition [Volume 2]PhysicsElectric Current in Conductors

A capacitor without a dielectric is connected to a battery at t = 0 . Let A be a point in the connecting wires and B be a point between the plates.

Options

  1. ACurrent does not flow through B .
  2. BCurrent does not flow through A .
  3. CCurrent flows through A as long as the charging is incomplete.
  4. DCurrent flows through B as long as the charging is incomplete.

Correct answer

D. Current flows through B as long as the charging is incomplete.

Step-by-step solution

When a capacitor is connected to a battery, conduction current flows through the connecting wires during the charging process. Since point A lies in the connecting wires, conduction current flows through A as long as the charging is incomplete. Between the plates of the capacitor, there is no physical medium, so conduction current is zero. However, as the capacitor charges, the electric field between the plates changes with time. This changing electric field produces a displacement current given by I_d = ₀ d _E dt

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