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

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.

Answer 2

Answer:

C. 1,760 Wh

Explanation: