A common flashlight bulb is rated at 0.30 A and 2.9 V (the

Chapter , Problem 21

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A common flashlight bulb is rated at 0.30 A and 2.9 V (the values of the current and voltage under operating conditions). If the resistance of the tungsten bulb filament at room temperature (20/C) is 1.1 0, what is the temperature of the filament when the bulb is on?

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