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7th Class Science Electric Current and Its Effects Question Bank Electric Current and Its Effects

  • question_answer
    When the strength of the current flowing through a coil is increased, which of the following statements is true for it?       

    A) Strength of the magnetic field decreases,                     

    B) Strength of the magnetic field increases,                      

    C) Amount of heat generated due to resistance decreases,            

    D) Strength of the magnetic field remains constant,                          

    Correct Answer: B

    Solution :

    The strength of the magnetic field of a coil is directly proportional to the strength of the current flowing through it.


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