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4.2.4a Resistance

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Question 4

A resistance wire of length $L\,$ breaks and has to be replaced with a wire of the same material and the same resistance. The only wire available has three times the diameter of the original wire.

Which length of this wire should be used?

A

$L9\frac{L}{9}$

B

$L3\frac{L}{3}$

C

$3 L$

D

$9 L$

Markscheme

4.2.4a Resistance Questions

IGCSE
Physics
4.2.4a Resistance

132 exam-style questions on CIE IGCSE Physics 4.2.4a Resistance. Each one has a worked solution and a mark scheme showing where the marks go.

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