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Capacitance (A-level only)

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Question 42

Capacitor $P$ , filled with a dielectric material of relative permittivity $εr\varepsilon_r$ , has circular plates of radius $R\,$ separated by a distance $d$ . The capacitance of this arrangement is $C$ .

Capacitor $Q\,$ is constructed using circular plates of radius $4R\,$ separated by a distance $3 d$ , and contains a dielectric with a relative permittivity of $εr8\displaystyle \frac{\varepsilon_r}{8}$ .

What is the capacitance of capacitor $Q$ ?

$16C\frac{1}{6} C$

$23C\frac{2}{3} C$

$83C\frac{8}{3} C$

$163C\frac{16}{3} C$

Markscheme

Capacitance (A-level only) Questions

A Level
Physics
Capacitance (A-level only)

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.

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