Question

An electric heater is rated at 2kw. Electrical energy cost Rs. 8 per kwh. what is the cost of using the heater for 3 hours

Answer 1

48

The total unit consumed = 2KW×3hour

6 KW/h

for 1KWh energy cost = 8 rupees

thus for 6KWh it is = 6×8

= 48 rupees

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Answer 2

Answer:

48 rupees

Explanation:

Given:

• Rating of the electric heater = 2 KW
• Time for which the heater was used = 3 hours
• Cost = rs.8 per Kwh

To find:

• Cost of using it for 3 hours

Energy consumed in three hours = Rating of the electric heater×3

Energy consumed in three hours = 2Kw×3h

Energy consumed in three hours = 6Kwh

Cost per 1 KWH = rs.8

Cost of 6 KWh = 6×8

Cost of 6 Kwh = 48 rupees

The cost is rupees 48