Question

A refrigerator operates on a average of 10 hours a day. If the power rating

of the fridge is 700 w how much electrical energy does the fridge use in one day

Answer 1

60480 kW

Step-by-step explanation:

The first step in calculating energy consumption is to know how many watts your device consumes per day.

The refrigerator operates on average of 10 hours per day.

The refrigerator ratings is : 700 w , this means 700 joules per second

1 second = 0.000277778 hours

? seconds= 10 hours

Perform cross product as;

( 10 * 1) / 0.000277778 = 36000 seconds

So,

700 joules = 1 second

? = 36000 seconds

Perform cross product as;

( 700 * 36000) /1 = 25,200,000 joules

25,200kW = 10 hours

? = 24 hours -----for 1 day

(25,200 * 24 )/10

=60480 kW