Class 12PhysicsElectric Potential and CapacitanceCharging and Discharging of Capacitance and RC circuit (DC)
Difficult$A$ resistance $R$ and a capacitance $C$ are connected in series to a battery of negligible internal resistance through a key. The key is closed at $t = 0$. If after $t \, s$ the voltage across the capacitance is seven times the voltage across $R$,the value of $t$ is:
- A$3 \, RC \ln 2$
- B$2 \, RC \ln 2$
- C$2 \, RC \ln 7$
- D$3 \, RC \ln 7$
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