Question

How does the resistor of a conductor depends on its length? If length is doubled then what happens to resistor?

Answer 1

According to the formula, R = pl/A (p - resistivity, l - length, A - area of cross section), the resistance of a conductor is directly proportional to its length.

If we double the length then its area of cross section will become half because volume will remain same.

Then new resistance will be... R = p(2l)/(A/2)

thus R = 4 x pl/A

Hence, resistance will become 4 times if length is doubled.

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Answer 2

Answer:

According to the formula, R = pl/A (p - resistivity, l - length, A - area of cross section), the resistance of a conductor is directly proportional to its length.

If we double the length then its area of cross section will become half because volume will remain same.

Then new resistance will be... R = p(2l)/(A/2)

thus R = 4 x pl/A

Hence, resistance will become 4 times if length is doubled.

plz mark it as brainliest

b..bye

#ANSWERWITHQUALITY

Explanation: