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If a light bulb is switched on for 20 s and it consumes 2400 J of electrical energy then it's power isa)60 Wb)70 Wc)80 Wd)90 WCorrect answer is option 'A'. Can you explain this answer? for Class 9 2025 is part of Class 9 preparation. The Question and answers have been prepared according to the Class 9 exam syllabus. Information about If a light bulb is switched on for 20 s and it consumes 2400 J of electrical energy then it's power isa)60 Wb)70 Wc)80 Wd)90 WCorrect answer is option 'A'. Can you explain this answer? covers all topics & solutions for Class 9 2025 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for If a light bulb is switched on for 20 s and it consumes 2400 J of electrical energy then it's power isa)60 Wb)70 Wc)80 Wd)90 WCorrect answer is option 'A'. Can you explain this answer?.

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