Question

The RC circuit is given as shown above. Find out the current in the circuit long time after the switch $S$ is closed ?

• A. Zero
• B. $V$
• C. $R$
• D. $C$
• E. $\frac{V}{R}$

Answer 1

The correct option is A Zero

After the switch being closed for a long time, the capacitor C has been completely charged and hence the potential drop across C is V.

From Kirchoff's loop rule, the voltage across R is therefore zero.

Option A is the correct choice.