Question

“Resistance of a conductor is 1 ohm”. What is meant by this statement?

A 4 ohm resistance wire is doubled on it. Calculate the new resistance of the wire.​

Answer 1

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▪︎The resistance of a conductor is said to be 1 ohm if a current of 1 ampere flows through it when the potential difference across it is 1 volt.

▪︎It means its length will get half and area of cross section will get doubled. Thus, R' = p' l'/A' = p (l /2) ÷ 2A = !/4 (p l / A) = 1/4R = 1/4 × 4 = 1Ω

Answer 2

Answer:

it means that it the conductor has a resistance of 1 ohm it means that the new resistance of wire is 8ohm