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Superconductors

resistance of...

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resistance of a metal wire of length 1 meter is 26 ohm at 20 degree celcius . if the diameter of the wire is 3mm, what will be the resistivity of the metal at that temperature ?

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Q. The temperature coefficient of resistance of a wire is

0.00125

per degree celcius. At

300 K

its resistance is

1

ohm. The resistance of the wire will be

2

ohm at following temperature :-

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