O-LevelPhysicsElectricity5054/12 · Oct/Nov 2018 · Q311 Mark
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
✓ Correct answer
D: 6.0 Ω
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