Electrical mathQuestion 1376 of 1506

A 2 kW heater runs 6 hours each day for 5 days. Energy costs 8 cents per kWh. What is the total cost?

  1. $4.80
  2. $7.20
  3. $0.80
  4. $48.00
Show answer

Correct answer: $4.80

Energy = 2 × 6 × 5 = 60 kWh. Cost = 60 kWh × $0.08 = $4.80.

Source: Computed, 12.3: Power Measurement

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Questions last reviewed: 18 October 2026