Question

A 1200 W refrigerator, a 1500 W electric frying pan, and a 200 W lamp are plugged into the same outlet in a 15 A, 220 V circuit. ( these devices are in parallel when plugged into the same socket.) What current (in A) is drawn by refrigerator?

Answer 1

The current drawn by the refrigerator will be 5.45 A.

Explanation:

Power is defined as the product of voltage and current passing through each device in a circuit. As the refrigerator, electric frying pan and lamp are plugged in a same outlet. All these are connected parallely. And in parallel connection, the voltage flowing through each device will be constant. So in this case, the power and voltage passing through the refrigerator will be constant. So power of refrigerator is 1200 W and the voltage passing through these instruments will be 220 V.

So power = Voltage × Current

1200 = 220 × Current

Current = 1200/220 = 5.45 A.

So the current drawn by the refrigerator will be 5.45 A.