Question

an electric heating element is conneceted to a 110V circuit and a current of 3.2 a is flowing through the element. How much energy is used up during a period of 5 hours by the element?

Answer 1

Energy= Power * time= VI*time

convert 5 hrs to seconds, and energy will be in joules.

If you leave time in hours, you can get energy in watt-hours, and convert that answer to kilowatt-hours if you wish.

Answer 2

1760