Question

As electric refrigerator of power 400ohm is allowed to tun 10hrs. Per day. What is the cost of energy to operate it for 30 days at Rs. 4.00per kWH

Answer 1

First of all power is not measured in ohm. It is the unit of electrical resistance.

But hope this helps you.

Power = 400 kW

Time=10hr

so, energy consumed in one day= 400*10

= 4000KWh

Cost of bill paid by the user= Rs.

$30 \times \frac{4000}{4}$

= Rs 30000