electric motor working ?
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Electrical MotorThe electric motor is a device which converts electrical energy to mechanical energy. There are mainly three types of electric motor. All of these motorswork in more or less same principle. Working of electric motor mainly depends upon the interaction of magnetic field with current.
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☺☺ hlo mate here is ur answer☺☺
☆ . Consider a rectangular coil kept in a uniform magnetic field .
☆ . Switch on the circuit , so that the current flows through the rectangular coil .
☆ . The sides AB and CD of the coil are always at right angles to the magnetic field.
☆ . According to right hand rule , at AB the magnetic force acts inward pependicular to the field of magnet and on CD , it acts outward.
☆ . The forces on the sides BC and DA varies b.coz they make different angles at different positions of the coil in the field . at BC magnetic force pulls the coil up and at DA magnetic force pulls it down .
☆ . The net force acting on AB and on CD is zero b .coz they carry equal currents in the oppsoite direction .similarly the sum of the forces on sides BC and DA is also zero . so net force is zero on the coil .
☆ . But the rectangular coil comes into rotation in clockwise direction b . coz equal and opposite pair of forces acting on the two sides of the coil.
☆ . If the direction of current in the coil is unchanged , it rotates , upto half rotation in one direction and the next half inthe direction opposite to previous like to and fro motion .
☆ . If the direction of current in the coil is changed , the coil will rotate continiously in one and the same direction .
☆ . To achieve this , Brushes B1 and B2 are used .
☆ . These brushes are connected to the battery . The ends of the coil are connected to slip rings C1 and C2 which rotate along with the coil.
☆ . Initially C1 is in contact with B1 and C2 is in contact with B2.
☆ . After half rotation , the brushes come into contact with the other slip rings in such away that the direction of current through the coil is reversed . This happens every half rotation .
☆ . Thus the direction of rotation of the coil remains the same . This is the principle used in "electric motor".
☆ . In electric motors , electrical energy is converted into mechanical energy .
HOPE THIS WILL HELP U ✌✌
☆ . Consider a rectangular coil kept in a uniform magnetic field .
☆ . Switch on the circuit , so that the current flows through the rectangular coil .
☆ . The sides AB and CD of the coil are always at right angles to the magnetic field.
☆ . According to right hand rule , at AB the magnetic force acts inward pependicular to the field of magnet and on CD , it acts outward.
☆ . The forces on the sides BC and DA varies b.coz they make different angles at different positions of the coil in the field . at BC magnetic force pulls the coil up and at DA magnetic force pulls it down .
☆ . The net force acting on AB and on CD is zero b .coz they carry equal currents in the oppsoite direction .similarly the sum of the forces on sides BC and DA is also zero . so net force is zero on the coil .
☆ . But the rectangular coil comes into rotation in clockwise direction b . coz equal and opposite pair of forces acting on the two sides of the coil.
☆ . If the direction of current in the coil is unchanged , it rotates , upto half rotation in one direction and the next half inthe direction opposite to previous like to and fro motion .
☆ . If the direction of current in the coil is changed , the coil will rotate continiously in one and the same direction .
☆ . To achieve this , Brushes B1 and B2 are used .
☆ . These brushes are connected to the battery . The ends of the coil are connected to slip rings C1 and C2 which rotate along with the coil.
☆ . Initially C1 is in contact with B1 and C2 is in contact with B2.
☆ . After half rotation , the brushes come into contact with the other slip rings in such away that the direction of current through the coil is reversed . This happens every half rotation .
☆ . Thus the direction of rotation of the coil remains the same . This is the principle used in "electric motor".
☆ . In electric motors , electrical energy is converted into mechanical energy .
HOPE THIS WILL HELP U ✌✌
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