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(1)It is given that the resistivity …

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(1)It is given that the resistivity of a conductor does not depend on length of wire. (2)But in the formula to calculate resistivity it is given that, Resistivity = RA/l where R = Resistance A = Area of cross-section l = length of wire This shows that 'l' plays a major role in calculating RESISTIVITY as it is in the denominator. So, these both (1) and (2) contradicts...How is this possible? Please explain in detail.

Posted by Anwesha :) 5 years, 4 months ago

CBSE > Class 10 > Science

1 answers

Rohit Panchal 5 years, 4 months ago

Sorry but the resistivity of the conductor depends on the wire . As the resistivity increases the length is doubled and the area is halved.

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CBSE > Class 10 > Science