Question

A wire of resistance 2ohm & resistivity 1.1*10^-6ohmm is stretched so that its length becomes three times of its original length. Determine its new resistance.

Answer 1

Answer :-

⭕ Given, Resistance of wire = 2 ohm

Stretching of length = 3 times

Therefore, The new resistance = n^2 R

R' = (3)^2 * 2 ohm

R' = 9*2 ohm

R' = 18 ohm

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