Physics 9702 · AS & A Level · Capacitors and capacitance

Capacitors and capacitance — practice question

(a(i))[2]

Define what is meant by the capacitance of a parallel plate capacitor.

(a(ii))[3]

State three separate functions of capacitors in electrical circuits.

(b(i))[1]

A student has three capacitors, each with capacitance $12\,\mu\text{F}$. Draw a diagram to show how the student connects the capacitors to produce a combined capacitance of $18\,\mu\text{F}$ between the terminals.

(b(ii))[1]

A student has three capacitors, each with capacitance $12\,\mu\text{F}$. Draw a diagram to show how the student connects the capacitors to produce a combined capacitance of $8\,\mu\text{F}$ between the terminals.

Worked solution & mark scheme

This 7-mark question has a full step-by-step worked solution and mark scheme. One marking point: capacitance expressed as charge per unit potential difference

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