Electric energy units are often expressed in the
Chapter , Problem 102(choose chapter or problem)
Electric energy units are often expressed in the form of kilowatt-hours. (a) Show that one kilowatt-hour (kWh) is equalto 3.6 X 106J. (b) If a typical family of four uses electricenergy at an average rate of 580 W, how many kWh wouldtheir electric bill show for one month, and (c) how manyjoules would this be? (d) At a cost of $0.12 per kWh, whatwould their monthly bill be in dollars? Does the monthly billdepend on the rate at which they use the electric energy?
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