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SSC Sample Paper SSC-CGL TIER - I Sample Test Paper-6

  • question_answer
    Normally in electric door bell, we use -

    A) bar magnet

    B) U-shaped magnet

    C) U-shaped electromagnet

    D) Needle magnet

    Correct Answer: C

    Solution :

    U-shaped electromagnet is used in door bell. Electromagnets are coils of wire wrapped around a small piece of magnetic material. When electricity is passed through the wire, it creates a magnetic field around the wire.


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