An electric bell is a mechanical bell that functions by means of an electromagnet. An electromagnet is a magnet that runs on electricity. Unlike a permanent magnet, the strength of an electromagnet can easily be changed by changing the amount of electric current that flows through it. The poles of an electromagnet can even be reversed by reversing the flow of electricity model supported by study material to make a suitable projects report by the student for the proper working of the project, we suggest you to buy Battery eliminator.
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