Explain the working of electric motor??
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Answers
An electric motor is a rotating device that converts electrical energy to mechanical energy. The principle behind the working of an electric motor is Fleming's left hand rule.
An electric motor consists of a rectangular coil ABCD of insulated copper wire. The coil is placed between two poles of a magnetic field such that the arm AB and CD are perpendicular to the direction of the magnetic field. The ends of the coil are connected to the two halves P and Q of split ring. The inner side of this halves are insulated and attached to an Axel. The external conducting ages of the p and q touch two conducting stationary brushes X and Y.
Current in the coil ABCD enter from the source battery through conducting brush X and flows back to the battery through brush Y. The current in an arm of the coil flows from A to B. In arm CD it flows from C to D, that is, opposite to the direction of current flowing through arm AB. On applying Fleming's left hand rule for the direction of force on a current carrying conductor in a magnetic field, the force acting on the arm AB pushes it downward while the force acting on arm CD pushes it upwards. Thus the coil and the axel O, mounted free to turn about an axis,rotate anticlockwise. At half rotation Q makes contact with the brush X and P with brush Y. Therefore the current in the coil gets reversed and flows only along the path DCBA.
Answer:
Explanation:An electric motor is a rotating device that converts electrical energy to mechanical energy. The principle behind the working of an electric motor is Fleming's left hand rule.
An electric motor consists of a rectangular coil ABCD of insulated copper wire. The coil is placed between two poles of a magnetic field such that the arm AB and CD are perpendicular to the direction of the magnetic field. The ends of the coil are connected to the two halves P and Q of split ring. The inner side of this halves are insulated and attached to an Axel. The external conducting ages of the p and q touch two conducting stationary brushes X and Y.
Current in the coil ABCD enter from the source battery through conducting brush X and flows back to the battery through brush Y. The current in an arm of the coil flows from A to B. In arm CD it flows from C to D, that is, opposite to the direction of current flowing through arm AB. On applying Fleming's left hand rule for the direction of force on a current carrying conductor in a magnetic field, the force acting on the arm AB pushes it downward while the force acting on arm CD pushes it upwards. Thus the coil and the axel O, mounted free to turn about an axis,rotate anticlockwise. At half rotation Q makes contact with the brush X and P with brush Y. Therefore the current in the coil gets reversed and flows only along the path DCBA.