O-LevelPhysicsElectricity5054/11 · May/June 2010 · Q261 Mark

A length of resistance wire is used as a resistor in a simple circuit. Four separate changes are made to the wire. Which change will not reduce the value of the resistance of the wire?

This question uses a diagram from the original paper, which isn't shown here. Open the full paper from the past papers archive to see it.

AIt is covered in an insulating sleeve.

BIts cross-sectional area is increased.

CIts length is decreased.

DIts temperature is decreased.

✓ Correct answer

A: It is covered in an insulating sleeve.

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Topic: Electricity, O-Level Physics (syllabus 5054). Multiple choice, 1 mark.
Source: O-Level Physics, May/June 2010 Paper 1 Variant 1, question 26.

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