Question

For the circuit shown in the figure, which of the following statement is / are true?

• A. Its time constant is $0.25$ second.
• B. In steady state, current through inductor will be zero.
• C. In steady state, current through the battery will be equal to $0.75$ amo.
• D. None of these

Answer 1

The correct option is B In steady state, current through inductor will be zero.

The current which now flows through the circuit is determined only by the DC or "pure" resistance of the coil windings as the rectance value of the coil has decreased to zero because the rate of change of current $\left(di/dt\right)$is zero in steady rate.