SOLUTION: A new LED light bulb uses 10 watts of power. Since energy = power × time energy=power×time , then the energy used for this light bulb can be found my multiplying the pow

Algebra.Com
Question 1142301: A new LED light bulb uses 10 watts of power. Since
energy
=
power
×
time
energy=power×time
, then the energy used for this light bulb can be found my multiplying the power times the time the bulb is lit. If the bulb is lit for one hour, the energy used will be 10 watt*hours or 10 Wh. If three 10 watt bulbs in one room are kept on for 5 hours, how many watt*hours of energy are used?

Answer by Alan3354(69443)   (Show Source): You can put this solution on YOUR website!
If three 10 watt bulbs in one room are kept on for 5 hours, how many watt*hours of energy are used?
========================
3*10*5 = 150 watt-hours
-------------
"in one room" is not relevant.

RELATED QUESTIONS

A regular light bulb uses 20 watts less than twice the power of an energy-saver light... (answered by stanbon,slippinghalo3,checkley71)
A light bulb designed to operate in a 120 V circuit has a resistance of 192 Ω. At... (answered by ikleyn)
The lighting for a billboard is provided by solar energy. If 8 energy panels generate 10... (answered by Alan3354,rothauserc)
The energy 𝑊 used by a device is directly related to the current 𝐼, the voltage... (answered by ikleyn)
how many joules of electrical energy are required to run a 5 watt radio for 30... (answered by Alan3354)
The energy 𝑊 used by a device is directly related to the current 𝐼, the voltage... (answered by ikleyn)
In a certain city, electricity costs $0.10 per kWh. What is the annual cost for... (answered by ikleyn,MathTherapy)
Light bulbs are measured in lumens (light output), watts (energy used), and hours (life). (answered by stanbon)
How would I calculate amount of energy a 4 watt night light bulb uses... (answered by ikleyn)