Resistance in a wire is often calculated using the formula R = ρl/A, where ρ is the resistivity of the wire, l is the length of the wire, and A is the cross-sectional area of the wire. The resistivity of copper at room temperature is 1.72 × 10-6 ohm-centimeter. What is the resistance of a copper wire 35 meters long with a cross-sectional area of 0.025 square centimeters?
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Answer:
R=0.02408 ohm
Explanation:
As we know the formula of resistance
R = ρl/A
Here
ρ = 1.72 × 10-6 ohm-centimeter.
l=35 meters
A=0.025 square centimeters
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