A wire is made of a material with a resistivity of 6.56847 × 10−8 Ω ·...

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Question

A wire is made of a material with a resistivity of 6.56847 × 10−8 Ω ·...

A wire is made of a material with a resistivity of 6.56847 × 10−8 Ω · m. It has length 4.63161 m and diameter 0.76384 mm. What is the resistance of the wire? Answer in units of Ω.

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Answer 1

Answer #1

Here,

resistivity, p = 6.56 *10^-8 Ohm.m

for the resistance

Resistance = p * length/area

Resistance = 6.56 *10^-8 * 4.63161/(pi *(0.76384/2 *10^-3)^2)

Resistance = 0.663042 Ohm

the resistance of the wire is 0.663042 Ω

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Answer 2

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