Q. What is the power rating (in W) of a bulb if a current of 0.3 A passes through on application of 240 V of potential difference across its terminals?
A) 36
B) 800
C) 72
D) 400
✔ Correct Answer: 72
Exam Insight
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A) 36
B) 800
C) 72
D) 400
✔ Correct Answer: 72
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