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An electric heater is rated at 2kW. Electrical energy costs rupees 4 per kWh. What is the cost of using the heater for 3 hours? a) Rupees 12 b) Rupees 24 c) Rupees 36 d) Rupees 48
An electric heater is rated at 2kW. Electrical energy costs rupees 4 per kWh. What is the cost of using the heater for 3 hours? a) Rupees 12 b) Rupees 24 c) Rupees 36 d) Rupees 48
CBSE | Class 10 | Electricity | Lakhmir Singh | Physics
An electric heater is rated at 2kW. Electrical energy costs rupees 4 per kWh. What is the cost of using the heater for 3 hours? a) Rupees 12 b) Rupees 24 c) Rupees 36 d) Rupees 48

Answer:

b) Rupees 24 is the correct answer.

It is assumed that the cost of electrical energy is rupees 4 per kWh.

The duration of the event is 3 hours.

The electric heater has a 2kW output.

We can calculate the amount for 3 hours using the given information as Rupees 24.

i

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