A capacitor discharges through a resistor. At time t=0t = 0t=0 the potential difference V V\,V across the capacitor is V0V_0V0. At time t=3.0 st = 3.0\text{ s}t=3.0 s, V=0.80V0V = 0.80 V_0V=0.80V0. Which statement is not correct?
At t=6.0 st = 6.0\text{ s}t=6.0 s, V=0.64V0V = 0.64 V_0V=0.64V0.
The capacitor is fully discharged after t=15 st = 15\text{ s}t=15 s.
The potential difference across the resistor is the same as that across the capacitor at any instant.
The charge on the capacitor decreases exponentially with time ttt.
22 exam-style questions on OCR A A Level Physics Capacitors, covering Capacitors, Energy, and Charging and discharging capacitors. Each one has a worked solution and a mark scheme showing where the marks go.