Question

In the living room of your house you would like to run a 360 W stereo, a 30 W computer, a 720 W laser light projector, and four 60 W lights. Assuming your house is wired for 120 Volts, how much current will be pulled by these electrical devices

Answer 1

Answer:

9.75 A.

Explanation:

Current: This can be defined as the rate of flow of electric charge in a circuit.

Note: Total power in the living room = 360 W + 30 W + 720 W + 60 W = 1170 W.

Using the formula of electric power,

P = VI ........................... Equation 1

Where P = Total power in the living room, V = Voltage, I = current.

Make I the subject of the equation,

I = P/V .......................... Equation 2

Given: P = 1170 W, V = 120 V.

Substitute into equation 2

I = 1170/120

I = 9.75 A.