A-LevelPhysicsD.C. circuits9702/12 · Oct/Nov 2013 · Q341 Mark

Two lamps are connected in series to a 250 V power supply. One lamp is rated 240 V, 60 W and the other is rated 10 V, 2.5 W. Which statement most accurately describes what happens?

ABoth lamps light at less than their normal brightness.

BBoth lamps light normally.

COnly the 60 W lamp lights.

DThe 10 V lamp blows.

✓ Correct answer

B: Both lamps light normally.

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Topic: D.C. circuits, A-Level Physics (syllabus 9702). Multiple choice, 1 mark.
Source: A-Level Physics, Oct/Nov 2013 Paper 1 Variant 2, question 34.

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