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4.2.4a Resistance

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Question 40

A wire has a resistance $R$ .

A second wire made from the same metal has triple the length and triple the diameter of the first wire.

What is the resistance of the second wire?

A

$R9\frac{R}{9}$

B

$R3\frac{R}{3}$

C

$3 R$

D

$9 R$

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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