1

Question

A series circuit is comprised of a battery with a voltage v, an open switch, solenoid with and inductance L and a resistor with the resistance R.

At time t=0, the switch is closed, what is the current through the resistor immediately after the switch is closed?

Open in App

Solution

The correct option is **D** 0

Just at the moment , when the switch is closed , current increases in inductor and due to Lenz's law an opposite current is induced in inductor which cancels the current given by battery , therefore total current (current in resistor) is zero just after the switch is closed , after some time applied voltage overcome the induced voltage and current starts flowing in circuit .

Just at the moment , when the switch is closed , current increases in inductor and due to Lenz's law an opposite current is induced in inductor which cancels the current given by battery , therefore total current (current in resistor) is zero just after the switch is closed , after some time applied voltage overcome the induced voltage and current starts flowing in circuit .

1

View More

Join BYJU'S Learning Program

Join BYJU'S Learning Program