Question

A wire of length 1m & radius 0.1mm has a resistance of 100 ohms find resistivory of the material

Answer 1

As we know
R=¶ L/A

here ¶ is resistivity
area = πr square
R is 100 ohms
Length is 1m.

¶= RA/L

Substitute values of R A and L to calculate resistivity.

Hope you get your answer.

Answer 2

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resistivity of material is 10⁶ ohm • m

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