Practicing Success
The charge flowing across the cell on closing the key k is equal to |
CV CV/2 2CV zero |
CV/2 |
When the key is kept open, the charge drawn from the source is Q = CeqV = $\frac{C}{2}$V When the key is closed the capacitor 2 gets short circuited And C'eq = C ∴ Q' = CV charge flown through cell Q'− Q = $\frac{C}{2}$V ∴ (B) is correct choice. |