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A light bulb, having a tungsten filament, draws 0.5 A at 110 V. The cold resistance of the filament is 20 n at 20 °C. At this temperature the temperature coefficient of resistance (for tungsten) is 0.005 °C. Determine the operating temperature of the bulb.

A light bulb, having a tungsten filament, draws 0.5 A at 110 V. The cold resistance of the filament is 20 n at 20 °C. At this temperature the temperature coefficient of resistance (for tungsten) is 0.005 °C. Determine the operating temperature of the bulb.

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A light bulb, having a tungsten filament, draws 0.5 A at 110 V. The cold resistance of the filament is 20n at 20 °C. At this temperature the temperature coefficient of resistance (for tungsten) is 0.005 °C. Determine the operating temperature of the bulb.
Transcribed Image Text:A light bulb, having a tungsten filament, draws 0.5 A at 110 V. The cold resistance of the filament is 20n at 20 °C. At this temperature the temperature coefficient of resistance (for tungsten) is 0.005 °C. Determine the operating temperature of the bulb.
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