We have a copper wire of resistance R. This wire is pulled so that its length is double ( temperature remains constant) find the new resistance of the wire in terms of its original resistance.
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resistance also gets double I.e.,2R
J1s2a:
He to explain it step by step..pls help
there are no steps involved.this is a fact but you can understand by the formula R=rho*length/area of crossection.
Tnku
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if the resistance of before wire is R and then it is double so the resistance of new wire will also get double that is 2R.
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