Question

Select One Option Correct from the following : A coil of wire having finite inductance and resistance has a conducting ring placed co-axially within it. The coil is connected to a battery at time t = 0, so that a time dependent current$I_1(t)$ starts flowing through the coil. If $I_2(t)$ is the current induced in the ring and B(t) is the magnetic field at the axis of the coil due to $I_1(t)$, then as a function of time t > 0, the product $I_2(t)B(t)$,
(A) increases with time.
(B) decreases with time.
(C) does not vary with time.
(D) passes through a maximum.

Answer 1

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✔✔passes through a maximum is the correct one.

✏option D is correct.

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Answer 2

Explanation:

passes through a maximum is the correct one.

✏option D is correct..