7th Class Science Related to Competitive Exam Question Bank Work and energy

  • question_answer
    Washing machine converts energy

    A) electrical energy to chemical energy

    B) electrical energy to mechanical energy

    C) chemical energy to sound energy

    D) mechanical energy to electrical energy

    Correct Answer: B

    Solution :

        We provide electricity by turning on plug to the washing machine and it performs mechanical work by washing clothes.


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