Question

When an electric heating element is connected to a 110 V 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

A. With a speed of 300,000,000 m/s
B. Through a relatively short distance .
C. Back and forth between the ends of the conductor
D. From one end of the conductor to the other end

Answer 1

D) From one of the conductor to the other end

The power being used momentarily is 110V x 3.2A = 352W

During a period of 5 hours: 352W * 5h = 1760 Wh = 6336kJ