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. How the magnetic Force between the electromagnet and the permanent magnet causes the coil turn?​


Sagot :

Answer:

To concentrate the magnetic field, in an electromagnet the wire is wound into a coil with many turns of wire lying side by side. The magnetic field of all the turns of wire passes through the center of the coil, creating a strong magnetic field there. ... This is called a ferromagnetic-core or iron-core electromagnet.