Question

calculate the resistance of 1m long copper wire of radius 1m. resistivity of
copper wire
= 1.72x 10 rise to minus 8.
​

Answer 1

Answer:

The resistance of the copper wire = 5.48 * 10^-9 ohm.

R = p * l / πr²

R = 1.72 * 10^-8 * 1 / 3.14 *1²

R = 1.72 * 10^-8 / 3.14

R = 5.48 * 10^-9 ohm

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Answer 2

Length= 1m

radius= 1m

resistivity = 1.72×10-8

Resistance= resistivity.×length/area

Area =πr²= 3.14×1=3.14

Resistance= 1.72 ×10-8×1/3.14

Resistance=0.54×10-8

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