Question

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

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

Answer 1

The correct option is E $\frac{V}{R}$

Just after the switch is closed, the potential drop across the capacitor C is zero.

From Kirchoff's loop rule the potential drop a.k.a voltage across R is $V$.

$\Rightarrow$ from Ohm's law, current in circuit $I=\frac{V}{R}$.

Option E is the right answer.