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A-LevelPhysicsD.C. circuits9702/12 · Feb/Mar 2024 · Q341 Mark

A resistor dissipates 25W of power when there is a potential difference (p.d.) of 4.0 V across it. What is the resistance of the resistor?

A0.16 Ω
B0.64 Ω
C100 Ω
D400 Ω

✓ Correct answer

B: 0.64 Ω

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About this question

Topic
D.C. circuits, A-Level Physics (syllabus 9702). Multiple choice, 1 mark.
Source
A-Level Physics, Feb/Mar 2024 Paper 1 Variant 2, question 34.

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