Obtain the temperature of the filament when the bulb is on

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A common flashlight bulb is rated at 0.300 A and 2.80 V (the values of the current and voltage under operating conditions). If the resistance of the bulb filament at room temperature (20°C) is 1.20 ?, what is the temperature of the filament when the bulb is on? The filament is made of tungsten.

Reference no: EM13293053

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