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A Lamp Consumes 1000 J of Electrical Energy in 10 S. What is Its Power? - CBSE Class 9 - Science

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Question

A lamp consumes 1000 J of electrical energy in 10 s. What is its power?

Solution

Power is given by the expression,

`"Power"="Work done"/"Time"`

Work done = Energy consumed by the lamp = 1000 J

Time = 10 s

`"Power"=1000/10=100"J s"^-1=100W`

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APPEARS IN

 NCERT Solution for Science Textbook for Class 9 (2018 to Current)
Chapter 11: Work and Energy
Q: 3 | Page no. 156
Solution A Lamp Consumes 1000 J of Electrical Energy in 10 S. What is Its Power? Concept: Work Done by a Power.
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