Work and Energy · Class 9 · CBSE Science
If the power of an electric bulb is 40 W, how much electrical energy does it consume in 2 minutes?
Practice question from Work and Energy (Class 9 · CBSE Science), with the correct answer and a step-by-step solution.
medium · MCQ · Q-1A53BB
If the power of an electric bulb is 40 W, how much electrical energy does it consume in 2 minutes?
- A.80 J
- B.2400 J
- C.4800 JCorrect answer
- D.8000 J
Solution
Power , so Energy . Here, and time . Therefore, .
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