At home, we pay our electric company for the energy we use in the units of kilowatt
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Question:
At home, we pay our electric company for the energy we use in the units of kilowatt hours (kWh). One kilowatt hour is the amount of energy when one kilowatt of power is used for 1 hour.
Example: if a 100 W light bulb is left on for one hour, then the energy it uses is:
Energy=Power ×time
E=Pt
E = (0.1 kW) (1 h)
E = 0.1 kWh
If it costs 12 cents per kWh (about the average rate in Texas), then this will cost:
cost=kWh ×rate
cost = (0.1 kWh) (12 cents)
cost = 1.2 cents
Q 10. A typical computer consumes about 200 W of power. If it is left on for 24 hours, how much energy does it consume? How much will this cost (at the rate of 12 cents per kWh)?
Related Book For
Introduction to Probability and Statistics
ISBN: 978-1133103752
14th edition
Authors: William Mendenhall, Robert Beaver, Barbara Beaver
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