Physics
Grade-9
Easy

Question

Percentage of energy input that is converted to a useful form is

  1. Efficiency
  2. Energy consumption
  3. Power consumption
  4. Power efficiency

hintHint:

  • Efficiency (%) = (useful energy output ÷ energy input) × 100

The correct answer is: Efficiency


    • Energy input = useful energy output + waste energy
    • Efficiency (%) = (useful energy output ÷ energy input) × 100
    • Percentage of energy input that is converted to a useful form is Efficiency

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