Electrical mathQuestion 1375 of 1506

A 12 kW heater runs 10 hours each day for 30 days. Energy costs 10 cents per kWh. What is the total cost?

  1. $3600.00
  2. $12.00
  3. $36.00
  4. $360.00
Show answer

Correct answer: $360.00

Energy = 12 × 10 × 30 = 3600 kWh. Cost = 3600 kWh × $0.10 = $360.00.

Source: Computed, 12.3: Power Measurement

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Questions last reviewed: 18 October 2026