Electrical mathQuestion 1372 of 1506

A 6 kW heater runs 6 hours each day for 5 days. Energy costs 10 cents per kWh. What is the total cost?

  1. $18.00
  2. $180.00
  3. $3.60
  4. $3.00
Show answer

Correct answer: $18.00

Energy = 6 × 6 × 5 = 180 kWh. Cost = 180 kWh × $0.10 = $18.00.

Source: Computed, 12.3: Power Measurement

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Questions last reviewed: 18 October 2026