Question

Figure shows the circuit with two resistors and an ideal inductor

• A. The current in $R_l$ is zero just after closing the switch S.
• B. The current in $R_l$ is maximum just after closing the switch S.
• C. othere current in $R_2$ is zero just after closing of the switch S.
• D. The currents in the resistors are maximum of their values a long time after closing the switch S.

Answer 1

The correct option is C othere current in $R_2$ is zero just after closing of the switch S.

As $R_1$ is connected across a constant potential difference so value of current through it will remain constant i.e $current=\frac{E}{R_1}$

and through $R_2$ as it connected along with the inductor so intitially resistance of inductor is infinity so current is 0 certain time.and with time current increases and reach to its maximum value after

$current=\frac{E}{R}(1-e^{-\frac{-Rt}{L}})$