Question

find the energy in kwh consumed in 10 hours by four power 500w each

Answer 1

1 appliance consumes power= 500 w
4 appliances consume power=4×500 = 2000w
now energy consumed=power ×time
p=2000 w , t= 10hours
=2000×10=20000wh
20000/1000kwh
=20 kwh
hope it helps u:)

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!