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9th Class Science Work and energy Question Bank Work, Energy and Power

  • question_answer
    In a factory, due to a sudden strike the work usually done in a day took a longer time. Which of the following happened?

    A)  Power increased.

    B)  Power decreased.  

    C)  Energy increased.

    D)  Energy decreased.

    Correct Answer: B

    Solution :

     \[P=\frac{W}{t}\],So, \[P\alpha \frac{1}{t}\]. \[P\] decreased as workers on strike have decreased the production or took long time to do the work.


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