A capacitor of capacitance 150 μF150\text{ }\mu\text{F}150 μF is charged and then discharged through a 30 kΩ30\text{ k}\Omega30 kΩ resistor. What fraction of the original charge remains on the capacitor 9.0 s after the discharge begins?
0.140.140.14
0.370.370.37
0.500.500.50
0.860.860.86
63 exam-style questions on AQA A Level Physics Capacitance (A-level only), covering Capacitance (A-level only), Parallel plate capacitor (A-level only), Energy stored by a capacitor (A-level only), and Capacitor charge and discharge (A-level only). Each one has a worked solution and a mark scheme showing where the marks go.