Question

A cloth dryer of 40 watts is operated for 30 minutes daily. what is the monthly cost of the electricity bill? If line voltage is 220 volts and the rate is 18 rupees per unit​

Answer 1

Explanation:

Given : P=0.1 kW t=1 hour per day

Energy consumed per day E=Pt=0.1×1=0.1 kWh per day

Total energy consumed per month E

T

=30×0.1=3 kWh per month

Cost of electricity =Re 1 per unit i.e per kWh

∴ Monthly bill =Re. 1×3=Rs. 3 per month