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.)

Algebra.Com
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(52776)   (Show Source): You can put this solution on YOUR website!
.
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



RELATED QUESTIONS

There is a current of 0.83 A through a light bulb in a 120 V circuit. What is the... (answered by ikleyn)
A regular light bulb uses 20 watts less than twice the power of an energy-saver light... (answered by stanbon,slippinghalo3,checkley71)
A new type of light bulb has an average lifespan of 1200 hours with a standard deviation... (answered by ewatrrr)
There are 10 light bulbs in a bag. Two are defective. Select a light bulb. What is the... (answered by stanbon)
The probability that a light bulb is faulty is 0.05. In a pack of 10 light bulbs, what is (answered by oscargut)
A new type of light bulb has an average lifespan of 1200 hours with a standard deviation... (answered by stanbon)
Two electric bulbs each designed to operate with a 500 watts in 220 volt line are... (answered by josmiceli,Alan3354)
In a certain city, electricity costs $0.10 per kW·h. What is the annual cost for... (answered by ikleyn,MathTherapy)
The lifetime in hours of a brand of light bulb is normally distributed with a mean of 221 (answered by Theo)