The Voltage and Power Ratings of a Particular Light Bulb,which

Multiple Choice

The voltage and power ratings of a particular light bulb,which are its normal operating values,are 110 V and 60 W.Assume the resistance of the filament of the bulb is constant and is independent of operating conditions.If the light bulb is operated at a reduced voltage and the power drawn by the bulb is 36 W,what is the operating voltage of the bulb?

A) 66 V
B) 72 V
C) 78 V
D) 85 V
E) 90 V