Question

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. 550 Wh B. 352 Wh C. 1,760 Wh D. 2,580 Wh

Answer 1

C. 1,760 Wh

Step-by-step explanation:

Answer 2

E = IVt

Where E is the energy is J
I is the current
V is the voltage
t is time in seconds.

I = 3.2A V = 110 V, t = 5 hours.

Since the options are in Wh we would leave the time in hours, and Current * Voltage has a unit of Watts.

E = (3.2 A * 110 V) * 5 hours

E = 352 Watts * 5 hours

E = 1760 Wattshours

E = 1760 Wh

Option C.