. A coil of wire having finite inductance and resistance has a conducting ring placed coaxially within it

The coil is connected to a battery at time t = 0, so that a time-dependent current I1 starts flowing through the coil. If I2 is the current induced in the ring. and B is the magnetic field at the axis of the coil due to I1 then as a function of time (t > 0), the product I2 (t) B(t)

A. Increases with time 

B. Decreases with time 

C. Does not vary with time

D. Passes through a maximum



Best Answer

Ans: D


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