Electrical mathQuestion 1374 of 1506

A 12 kW heater runs 10 hours each day for 20 days. Energy costs 10 cents per kWh. What is the total cost?

  1. $360.00
  2. $2400.00
  3. $12.00
  4. $240.00
Show answer

Correct answer: $240.00

Energy = 12 × 10 × 20 = 2400 kWh. Cost = 2400 kWh × $0.10 = $240.00.

Source: Computed, 12.3: Power Measurement

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Questions last reviewed: 18 October 2026