Long Answer Type Question
22. (a) What is an electric motor ? With the help of a labelled diagram, describe the working of a simple electric
motor.
(b) What are the special features of commercial electric motors ?
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An electric motor works on the principle of magnetic effect of electric current. In an electric motor, a rectangular coil ABCD in placed between two magnets in poles N and S. Now, current is passed through it continuously. When current is passed into the coil, it produces a magnetic field around it.
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Answer:
diagram ,working and principal
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