Physics · Oct / Nov 2018 · Paper 11 · Question 28
5054Resistance
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?
- A0.094 Ω
- B0.38 Ω
- C1.5 Ω
- D6.0 Ω
As printed in the paper
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Correct answer: D. 6.0 Ω
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