Physics (AS & A Level) · Feb / March 2019 · Paper 12 · Question 15
Which statement best represents the principle of conservation of energy?
- AEnergy cannot be used faster than it is created.
- BThe supply of energy is limited, so energy must be conserved.
- CThe total energy in a closed system is constant.
- 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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