Calculate the cost of using a 2kW motor pump in a house for one hour each day for 30 days if the rate is Rs. 1.50 per unit kWh.

Question

Question

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Answer 1

The correct answer is Rs. 90.

Calculation:

Given,

Power = 2 kW

time = 1 hr × 30 days = 30 hours

Energy = Power × Time

⇒ Energy = 2 × 30 = 60 kWh = 60 unit

The cost of using a 2kW motor pump for 1 hour each day for 30 days = 60 × 1.5 = Rs. 90.