Calculate the resistance of 1 km long wire from of Copper and radius 1 m resistivity of copper is 1.72 into 10 power minus 8r metre
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L=1km=1000m
r= 1m
ρ= 1.72 x 10^-8
a= πr^2=3.14
We know that
R= ρL/a
R= (1.72x10^-8x1000)/3.14
R= 5.4x10^-6
r= 1m
ρ= 1.72 x 10^-8
a= πr^2=3.14
We know that
R= ρL/a
R= (1.72x10^-8x1000)/3.14
R= 5.4x10^-6
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GIVEN THAT
- Length of copper wire = 1 km = 1000 m
- Radius of copper wire = 1 m
- Resistivity of copper = 1.72 x 10⁻⁸
CALCULATION OF RESISTANCE
- (Resistivity of copper × Length)/(Area)
- (Resistivity of copper × Length)/(πr²)
- [1.72×10⁻⁸*1000]/[3.14 × 1]
- 5.5 × 10-⁶ ohm
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