Which of the following physical quantities has a magnitude, in SI units, equal to the numerical value of πε0\pi\varepsilon_0πε0?
The electric potential at a distance of 4.0 m4.0\text{ m}4.0 m from a point charge of 1.0 C1.0\text{ C}1.0 C in a vacuum.
The electric field strength at a distance of 2.0 m2.0\text{ m}2.0 m from a point charge of 2.0 C2.0\text{ C}2.0 C in a vacuum.
The electrostatic force between two point charges, each of 1.0 C1.0\text{ C}1.0 C, separated by a distance of 2.0 m2.0\text{ m}2.0 m in a vacuum.
The capacitance of an isolated conducting sphere of radius 0.25 m0.25\text{ m}0.25 m in a vacuum.
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.