A wire is drawn through a die, stretching it to six times its original length. By...

Question

Question

A wire is drawn through a die, stretching it to six times its original length. By what factor does its resistance increase?

science physics

Answer 1

Answer #1

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Resistance is proportional to L/A of a metal where L is length and A is Area

When L increases by 6 times, then A decreases by 6 times to conserve volume.

So, net increase in resistance = (6)² times = 36 times

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Answer 2

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