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The resistance of a hot tungsten filamen...

The resistance of a hot tungsten filament is about 10 times that in its normal state . What will be the resistance of a 100W-200V tungsten lamp in its normal state ?

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The resistance of a tungsten filament at 150^@C is 133Omega .What will be its resistance at 500^@C ? The temperaturecoefficient of resistance of tungsten at 0^@C is 0.0045^@C^-1

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