Question

20points ........


EXPLAIN the construction and working of the...... a) Electric motor b) electric generator.... in brief..​

Answer 1

Construction:-It consist of a rectangular coil PQRS of insulated copper wire suspended in a uniform magnetic field.The ends of rectangular coil are connected to the two copper metallic split ring"C"&"D" called split commutator.It rotates along with the coil.The external source such as battery sends the current to the coil through key and conducting stationary carbon brushes"X"&"Y"which slides ring "C"&"D" respectively.

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Answer 2

ELECTRIC MOTOR

NOW CONSIDER THE COIL IS PLACED IN FIXED MAGNETIC FIELD SO USE YOUR FLEMINGS LEFT HAND RULE AND CORRECT IS IN DIRECTION ABCD SO BY RULE AB MOVES DOWN, AFTER HALF ROTATION IT'S REVERSED DUE TO COMMUTATORS

ELECTRIC GENARATOR