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Physics (AS & A Level) · Oct / Nov 2024 · Paper 12 · Question 17

9702Energy conservation

Which statement represents the principle of conservation of energy?

  1. AEnergy cannot be used faster than it is created.
  2. BThe supply of energy is limited, so energy must be conserved.
  3. CThe total energy in a closed system is constant.
  4. DThe total energy input to a system is equal to the useful energy output.

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Correct answer: C. The total energy in a closed system is constant.

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