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15 October, 08:47

At the same temperature, two wires made of pure copper have different resistances. The same voltage is applied at the ends of each wire. The wires may differ in

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  1. 15 October, 08:57
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    As we know that the resistance of the wire is directly proportional to the length of wire and inversely proportional to the area of crossection of the wire.

    As the material is copper for both the wires so the resistivity is same and the voltage is also same. As their resistance is different it means either length is different or the area of crossection is different.
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