The plates of a capacitor are charged to a potential difference of 320 volt and are then connected across a resistor. The potential difference across the capacitor decays exponentially with time. After 1 sec the potential difference between the plates of the capacitor is 240 volts. what is the potential difference between the plates after 2 s?

Options

A. 200 V and 180 V
B. 180 V and 135 V
C. 160 V and 80 V
D. 140 V and 20 V

Answer

B

Explanation

Use `V=V_(0)e^(-t//tau)`