Physics · Oct / Nov 2018 · Paper 12 · Question 31

A wire of length 0.50 m and cross-sectional area 1.0 × 10⁻⁶ m² has a resistance of 0.75 Ω. Another wire of the same material has a length of 2.0 m and a cross-sectional area of 0.50 × 10⁻⁶ m². What is the resistance of the longer wire?

1. A0.094 Ω
2. B0.38 Ω
3. C1.5 Ω
4. D6.0 Ω

As printed in the paper