Electrical power
2 marks · EasyA halogen desk lamp is rated at 24 V, 1.5 A.
(a)[2 marks]
Calculate the power output of the lamp.
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36 W (±0.5)
(a) 36 W
Common mistakes: incorrect multiplication
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Marking points
M1 (a) · 1 mark · Substitution into P = IV: P = 24 × 1.5
A1 (a) · 1 mark · Correct final answer: 36 W (allow follow-through from candidate working) (follow-through)
Worked solution
Power, .