Physics, asked by racemelochav3, 11 months ago

Calculate resistance of 1 km long copper wire of radius 1 mm

Answers

Answered by romi2640

1

Explanation:

Resistivity of copper is 1.72×10-8Ωm. If R is the resistance of the given wire, then R=ρlA=(1.72×10-8Ωm)×(1000m)3. 14×10-6m2=5.48Ω

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