calculate the resistance of 1 km long copper wire of radius 1mm
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Answered by
79
Resistivity of Copper (p) - 1.72×10^-8 Ωm
Length (l) = 1000m
Radius = 0.001
Area of cross section = πr²
= 3.14 × (0.001)²
= 3.14 × 0.000001
= 0.00000314 m²
R = p.l/a
R = 1.72 × 10^-8 × 1000 / 3.14×10^-6
R = 5.44 Ω
I hope this will help you.
Length (l) = 1000m
Radius = 0.001
Area of cross section = πr²
= 3.14 × (0.001)²
= 3.14 × 0.000001
= 0.00000314 m²
R = p.l/a
R = 1.72 × 10^-8 × 1000 / 3.14×10^-6
R = 5.44 Ω
I hope this will help you.
Answered by
10
I hope it will help you
thanks
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