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The resistance of a wire at room temperature 20°C is found to be 20W. Now to increase the resistance by 20%,

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The resistance of a wire at room temperature 20°C is found to be 20W. Now to increase the resistance by 20%, the temperature of the wire must be [The temperature coefficient of resistance of the material of the wire is 0.002 per °C].

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The correct answer is  124 C

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