DC motor
The Working Principle of a DC Motor
A DC motor is an electromechanical device that converts DC electrical
energy into mechanical energy. It works on the principle of Lorentz force,
where a magnetic field is produced by the current flowing through a coil, and
a force is exerted on this coil when placed in a magnetic field.
A current-carrying conductor placed in a magnetic field experiences a force.
This force is given by the Lorentz force equation:
F=B*I*L
where F is the force, B is the magnetic flux density, I is the current, and L is
the length of the conductor.
When a loop or coil of wire is placed in a magnetic field, a torque is
produced, which causes the coil to rotate. The torque is given by:
T = B * I * (A / 2)
where T is the torque, B is the magnetic flux density, I is the current, and A is
the area of the coil.
The direction of the force and torque is determined by Fleming's left-hand
rule, as shown in this video.
The Working Principle of a DC Motor
A DC motor is an electromechanical device that converts DC electrical
energy into mechanical energy. It works on the principle of Lorentz force,
where a magnetic field is produced by the current flowing through a coil, and
a force is exerted on this coil when placed in a magnetic field.
A current-carrying conductor placed in a magnetic field experiences a force.
This force is given by the Lorentz force equation:
F=B*I*L
where F is the force, B is the magnetic flux density, I is the current, and L is
the length of the conductor.
When a loop or coil of wire is placed in a magnetic field, a torque is
produced, which causes the coil to rotate. The torque is given by:
T = B * I * (A / 2)
where T is the torque, B is the magnetic flux density, I is the current, and A is
the area of the coil.
The direction of the force and torque is determined by Fleming's left-hand
rule, as shown in this video.
