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24 August, 16:46

A potential difference of 12v produces a current of 0.30A in a piece of cooper wire. What is the resistance of the copper wire?

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  1. 24 August, 17:11
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    Well, its a easy problem

    By ohms law,

    we have V = IR

    Where V is the voltage applied across the wire and R is the resistance and I is the current

    => R = V/I

    => R = 12/0.3 = 40 ohm
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