SOLUTION: A light bulb designed to operate in a 120 V circuit has a resistance of 192 Ω. At what rate does the bulb use electric energy? (Power is the rate at which energy is used.)
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Question 1120361: A light bulb designed to operate in a 120 V circuit has a resistance of 192 Ω. At what rate does the bulb use electric energy? (Power is the rate at which energy is used.) Answer by ikleyn(52775) (Show Source):
Power P = ,
where V is voltage in volts, R is resistance in ohms.
Substitute and calculate P = in watts.
See this Wikipedia article
https://en.wikipedia.org/wiki/Electric_power
