Physics, asked by lashanglimboo6181, 9 months ago

sics MCQ Questions for Class 12 Pdf Question 14. A transformer is used to light a 100 W and 110 V lamp from a 220 V mains. If the main current is 0.5 A, the efficiency of the transformer is approximately
(a) 30%
(b) 50%
(c) 90%
(d) 10%

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Answered by jatinJG

0

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