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What is resistivity and define its …

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What is resistivity and define its SI unit?

Posted by Zaid Ansari 6 years, 2 months ago

CBSE > Class 10 > Science

1 answers

Yogita Ingle 6 years, 2 months ago

Resistivity is defined as the resistance offered by a unit length of conductor having unit area of cross-section .

Its S.I. unit is ohm-meter.

It does not change with the increase in length of wire but resistance becomes 4 times on stretching the wire to twice its length.

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