Q. 143.8( 8 Votes )

What is the resistance of a conductor? On what factors does it depend?

Answer :

The property of a conductor due to which, it opposes the flow of current through it, is called resistance. The resistance of a conductor is numerically equal to the ratio of potential difference across its ends to the current flowing through it, i.e
Resistance = Potential difference / Current 
R = V/I
The resistance of a conductor depends on the length, thickness, nature of material and temperature of the conductor. A long wire has more resistance and a short wire has less resistance. A thick wire has less resistance and a thin wire has more resistance. The rise in temperature of a wire increases its resistance.

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