Question #8520

The temperature at which the tungsten filament of a 12V and 36W lamp operates is 1730 Degrees Celsius. If the temperature coefficient of resistance of tungsten is 610^−3/K, find the resistance of the lamp at a room temperature of 20 Degrees Celsius.
(A) 10.00 ohms
(B) 0.45 ohms
(C) 0.39 ohms
(D) 4.00 ohms

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