Question

Calculate the electricity bill for $30days$ if an air conditioner of rating $2kW$ is operated for $4hours$ per day. The cost of electricity per unit is $Rs.5$.

• A. $Rs.1200$
• B. $Rs.200$
• C. $Rs.120$
• D. $Rs.2000$

Answer 1

The correct option is A $Rs.1200$

Given:
Power rating of the air conditioner = $2kW$
Cost of electricity per unit = $Rs.5$
Time for which the device is operated in a day = $4hours$
Units consumed per day = $2kW\times 4hours=8kWh=8units$
Units consumed in $30days$ = $8\times 30=240units$
Electricity bill for $30days$ = $240units\times Rs.5\frac{1}{unit}=Rs.1200$