A-LevelPhysicsD.C. circuits9702/12 · May/June 2022 · Q321 Mark

The circuit diagrams show two lamps X and Y each connected to a cell. The current in lamp X is 0.50 A and its resistance is 9.6 Ω. The current in lamp Y is 3.0 A and its resistance is 1.2 Ω. [Figure 32.1] What is the ratio power in lamp X / power in lamp Y?

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A0.22

B0.75

C1.3

D4.5

✓ Correct answer

A: 0.22

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Topic: D.C. circuits, A-Level Physics (syllabus 9702). Multiple choice, 1 mark.
Source: A-Level Physics, May/June 2022 Paper 1 Variant 2, question 32.

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