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4.2.4a Resistance

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Question 4

A metal wire of length $L\,$ and cross-sectional area $A\,$ has a resistance of $R$ . A second wire, made of the same metal, has a length of 3L and a cross-sectional area of 2A.

What is the resistance of the second wire?

$23R\frac{2}{3}R$

$32R\frac{3}{2}R$

$5 R$

$6 R$

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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