Question

There are 4 devices of 500w each.The energy consumed by all four devices in kwh in 10 hours is

Answer 1

Energy in one hour in KwH = 0.5 x4 = 2.0 = 2 Kw

Energy in 10 hours = 2x 10 = 20 KWH

Answer 2

Hey there!

Given,

Power ( P) = 500 W =0.50 kW

Time (t) = 10 h

We know,

Work done = Energy consumed.

Power = work done / time

0.50 = Energy consumed / 10

Energy consumed  = 0.50 * 10 = 5 kWh

Now,

Energy consumed by four devices = 4 * 5 = 20 kWh.

Good day!