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  5. Electro Magnetic Induction

12th Class Physics Electro Magnetic Induction Question Bank Case Based (MCQs) - Electromagnetic Induction

  • question_answer
    Can you recharge the battery of your mobile phone with the help of bottle dynamo?

    A) Yes

    B) No

    C) Yes, when a rectifier is used

    D) Yes, when a transformer is used

    Correct Answer: C

    Solution :

    Option [c] is correct Explanation: Newer models of bottle generators are now available with a rectifier. DC available from such bottle generator can be used directly for charging mobile phone. Otherwise with the old models, a rectifier is to be attached to convert AC to DC.


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