Cambridge IGCSE Physics practice

Paper 3 structured question: Resistance

Try the question first, then check the answer and practise the same topic again.

At a glance

Paper

Marks

Topic

Resistance

Exam-style question

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Paper 3Theory (Core)1 marks

A metallic wire is used in an electrical circuit.

Description

The wire has a length of 2 meters and a cross-sectional area of 1 mm².

a
State the relationship between the length of the wire and its resistance.
Your answer
Aim for approximately 1 distinct marking point.
[1]

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Paper 3Theory (Core)3 marks

Description

The wire is 3 meters long and has a cross-sectional area of 2 mm².

a
Describe how the resistance of this wire would change if its length is increased to 6 meters while keeping the cross-sectional area constant.
Your answer
Aim for approximately 3 distinct marking points.
[3]