Question

A wire of resistance 8-2 & length 50cm has an area of cross section 0.02cm². Calculate the resistivity of the wire.​

Answer 1

Explanation:

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Answer 2

Answer:

Given:- R= 8-² ; l = 50cm ; A = 0.02cm².

R = p× l / A

p = R × A / l

p = 8-² × .02/50

p = 1 × 2/8 × 100 × 50

p = 1 / 20000

p = 0.5 × 10-4 ans

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