10th Class Science Magnetic Effects of Electric Current Question Bank Magnetic Effects of Electric Current

  • question_answer
    Which of the following alters the direction of the current in the coil every half rotation in a D.C. motor?

    A) A core                                 

    B) A commutator                 

    C) Magnets                            

    D) All of the above              

    Correct Answer: B

    Solution :

    The function of a commutator in a D.C. motor is to alter the direction of the current in the coil after every half rotation \[(\text{18}0{}^\circ )\].


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