Determine the resistance of the filament

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Reference no: EM13229377

A GE softwhite longlife lightbulb is rated as follows: Pr=rated power= 60 W Por= rated optical power = 820 lumens (lm) (average) 1 lumen = 1/680 W operating life = 1500 h (average) Vr = rated operating voltage= 115 V The resistance of the filament of the bulb, measured with a standard multimeter, is 16.7 ohms. When the bulb is connected into the circuit and is operating at the rated values given above determine a) the resistance of the filament b) the efficiency of the bulb

Reference no: EM13229377

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