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KVPY2015PhysicsAlternating Current

In the circuit shown below, all the inductors (assumed ideal) and resistors are identical. The current through the resistance on the right is I after the key K has been switched on for a long time. The currents through the three resistors(in order, from left to right) immediately after the key is switched off are

Options

  1. A2 I upwards, I downwards and I downwards.
  2. B2 I downwards, I downwards and I downwards.
  3. CI downwards, I downwards and I downwards
  4. D0, I downwards and I downwards

Correct answer

A. 2 I upwards, I downwards and I downwards.

Step-by-step solution

As current does not change through inductor immediately. It remains I through right & middle resistance & 2 i upwards in left resistance?

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