In the circuit shown in figure, switch remains closed for long time. It is opened at time t = 0. Match the following two columns at second. Column IColumn II(A)Potential differences across inductor(I)9 V(B)Potential difference across resistance(II)4.5 V(C)Potential difference across resistance(III)6 V(D)Potential difference between points B and C(IV)None of these

In the circuit shown in figure, switch remains closed for l…

Physics Electromagnetic Induction Matching Type Question MCQ (Single Correct)

In the circuit shown in figure, switch remains closed for long time. It is opened at time t = 0. Match the following two columns at second.

Column I	Column II
(A)	Potential differences across inductor	(I)	9 V
(B)	Potential difference across resistance	(II)	4.5 V
(C)	Potential difference across resistance	(III)	6 V
(D)	Potential difference between points B and C	(IV)	None of these

-(IV) -(I) -(I) -(II)

-(II) -(II) -(III) -(IV)

-(I) -(III) -(IV) -(I)

-(I) -(IV) -(II) -(III)

Verified by Experts

The correct answer is:

Steady state current through inductor,

Now, this current decays exponentially across inductor and two resistors.

Given time is half-life time. Hence, current will remain 1.5 A.

In the beginning
After one half-life time

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