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A-LevelPhysicsWork, energy and power9702/12 · Oct/Nov 2022 · Q181 Mark

A lamp is switched on for 2.0 hours. The power input to the lamp is 1.0W. The energy given out by the lamp as light is 7.0 × 10³ J. How much energy is converted to other forms by the lamp?

A120 J

B200 J

C3400 J

D7200 J

✓ Correct answer

B: 200 J

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About this question

Topic: Work, energy and power, A-Level Physics (syllabus 9702). Multiple choice, 1 mark.
Source: A-Level Physics, Oct/Nov 2022 Paper 1 Variant 2, question 18.

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