Question

Find the cost of electric energy at the rate of rupees 7 per unit for January 2021 when five bulbs of 10
watt each are used 6 hours daily and an electric heater of 1.5 kilowatt is used 2 hours daily​

Answer 1

Answer:

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