Question

an electric bulb rated 400 watt operates 4 hours per day what is the cost of the energy to operate it at rupees 3 per kilowatt​

Answer 1

Answer:

Rs 288.00

Explanation:

Cost of the energy to operate refrigerator at a rate ofRs 3.00 per kWh = 96 x 3.00 = Rs 288.00.

Answer 2

answer

Energy of one day = 400×4

= 1.6 kilowatt hour

so, the cost of energy = 16×3= 48 kilowatt hour