State the various factors on which the electrical resistance of a conductor depends. How does it depend on these factors?

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Solution

The resistance of a conductor depends on the following factors:

(i) The material of the conductor: The resistance of a conductor is directly proportional to the resistivity of the material. It is the characteristic property of a material.

(ii) The shape of the conductor: The resistance of a conductor is directly proportional to the length of the conductor.

(iii) Size of the conductor: The resistance of a conductor is indirectly proportional to the area of the cross section of the conductor.

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