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------------------------------------------------ An electric heater with a rating of 1000 W is used for 5 hours per day for 20 days. What is the electrical energy utilized?

A. 100 kWh
B. 200 kWh
C. 120 kWh
D. 500 kWh

The electrical energy utilized can be calculated using the formula E = Pt, where E is the energy in kilowatt-hours (kWh), P is the power in kilowatts (kW), and t is the time in hours. In this case, the power is 1000 W, which is equal to 1 kW, and the time is 5 hours per day for 20 days. The correct answer is (a) 100 kWh.

Explanation:

The electrical energy utilized can be calculated using the formula E = Pt, where E is the energy in kilowatt-hours (kWh), P is the power in kilowatts (kW), and t is the time in hours. In this case, the power is 1000 W, which is equal to 1 kW, and the time is 5 hours per day for 20 days.

Calculating E = (1 kW)(5 h/day)(20 days) = 100 kWh. Therefore, the correct answer is (a) 100 kWh.

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