Physics, 28.07.2019 07:30 HTKPenguin
Acommon flashlight bulb is rated at 0.23 a and 2.9 v (the values of the current and voltage under operating conditions). if the resistance of the bulb filament at room temperature (20°c) is 1.1 ω, what is the temperature of the filament when the bulb is on? the temperature coefficient of resistivity is 4.3 × 10-3 k-1 for the filament material.
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Acommon flashlight bulb is rated at 0.23 a and 2.9 v (the values of the current and voltage under op...
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