Physics > 2007 > 18
JAMB UTME
A 120V, 60W lamp is to be operated on 220V a.c. supply mains. Calculate the
value of non-inductive resistance that would be required to ensure that the
lamp is run on correct value.
value of non-inductive resistance that would be required to ensure that the
lamp is run on correct value.
A.
440Ω
B.
300Ω
C.
200Ω
D.
100Ω
Answer: A
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