Question

If the length and diameter of a conducter are halved then it's resistance is? ​

Answer 1

If the diameter of the conductor is halved and its length is doubled, theresistance? Now thw above expression shows that the resistanceis directly proportional to the length of the conductor and inversely proportional to the area of cross section. 'roh' is a constant called resistivity or specific resistance.

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Answer 2

Answer:

Resistance is inversely proportional to cross sectional area. So if the diameter is halved the cross-sectional area is quartered and the resistance is quadrupled.