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Capacitance (A-level only)

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Question 41

A parallel-plate capacitor with square plates of side length $L\,$ and plate separation $d\,$ has air between its plates, giving a capacitance $C$ .

A second capacitor has square plates of side length 3L and a plate separation of $4 d$ . The gap between these plates is completely filled with a dielectric material of relative permittivity $εr=8\varepsilon_r = 8$ .

What is the capacitance of this second capacitor in terms of $C$ ?

$4.5 C$

$6 C$

$18 C$

$72 C$

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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