1. A lamp is marked 60 W, 220 V. It is operated at 2
200 V, the rate of consumption of energy will
be (approximate)
(A) 42 Joule/sec (B) 50 Joule/sec
(C) 60 Joule/sec (D) 54 Joule/sec
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Answer:
50 Joule/sec(approx value)
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