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Question on: WAEC Physics - 1990

Calculate the resistance of the filament of a lamp rates 240 V, 40 W
A
240Ω
B
360Ω
C
720Ω
D
1440Ω
Ask EduPadi AI for a detailed answer
Correct Option: D
R = V2/P = 2402/40 = 1440Ω

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