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    Question

    What is the main principle behind the working of an

    electric motor?  
    A Electrostatic induction Correct Answer Incorrect Answer
    B Electromagnetic induction Correct Answer Incorrect Answer
    C Faraday's law of induction Correct Answer Incorrect Answer
    D Fleming's left hand rule Correct Answer Incorrect Answer

    Solution

    An electric motor works on the principle of electromagnetic induction.   When a current carrying conductor is placed in a magnetic field, a force acts on it, resulting in motion.   This is explained by Fleming's left hand rule.   The magnetic field and electric current interact to produce mechanical energy.

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