A5.5-kw resistance heater in a water heater runs for 3 hours to raise the water temperature to the desired level. determine the amount of electric energy used in both kwh and kj.

16.5 kwh and 59400 kJ.

Explanation:

kWh is a measure of energy that is equivalent to the power in kw times the number of hours the device worked.

In this case, it would be equal to:

1 kw also means 1kj of energy spent per second. With this, we calculate the amount of energy in kJ spent by the resistance:

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