Question

.A copper wire of length 2m and area of crossection 1.7 x 10-6 m2 has a reistance of 2x 10 -2 ohms. Calculate the resistivity of copper.
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Answer 1

Answer:

R=ρl/A

2*10⁻²=ρ 2/(1.7*10⁻⁶)

10⁻²* 1.7*10⁻⁶=ρ

1.7*10⁻⁸=ρ

Explanation: