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What are electromagnets ?...

What are electromagnets ?

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When ferromanetic substances are subjected to a varying electric field they acquire magnetism. In the absence of the electric field the FMS gets demagnetised . These are called electromagnets.
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  • What is electromagnetic induction ?

    A
    The process of inducing charges in a body
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    The process of rotating a coil of an electric motor
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    D
    The process of generating magnetic field due to a current passing through a coil

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