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When a potential difference of 10 V is applied to a coil of copper wire of mean temperature 20 °C, a current of 1.0 A flows in the coil. After some time the current falls to 0.95 A yet the supply voltage remains unaltered.

Determine the mean temperature of the coil given that the temperature coefficient of resistance of copper is 4.28 x 10^-3 °C referred to 0 °C.

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Electrical & Electronics, Engineering

Category:- Electrical & Electronics
Reference No.:- M91959011

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