Question

Current drawn by battery just after closing the switch is

• A. $\frac{2V}{3R}$
• B. $\frac{3V}{2R}$
• C. $\frac{2V}{3R}$
• D. $\frac{V}{R}$

Answer 1

The correct option is A $\frac{2V}{3R}$

Just after switch is closed, capacitor behave as short circuit.

This can be redrawn as
Equivalent resistance,
$R_{eq}=R+\frac{R}{2}=\frac{3R}{2}$
Current $i=\frac{V}{R_{eq}}=\frac{2V}{3R}$