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A copper wire has a diameter 0.5 mm and ...

A copper wire has a diameter 0.5 mm and resistivity `1.6 xx 10^(-2)m`.
(i) What will be the length of this wire to make the resistance of `12Omega`?
(ii) How much will be the resistance of another copper wire of same length but half the diameter?

Text Solution

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(i) 147.3 m (ii) `48Omega`
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