By Princess Barcega
The magnetic force (F) the conductor experiences is equal to the product of its length (L) within the field, the current I in the conductor, the external magnetic field B and the sine of the angle between the conductor and the magnetic field. In short
F= BIL (sin)
When a current-carrying conductor is placed in a magnetic field, there is an interaction between the magnetic field produced by the current and the permanent field, which leads to a force being experienced by the conductor:
The magnitude of the force on the conductor depends on the magnitude of the current which it carries. The force is a maximum when the current flows perpendicular to the field (as shown in diagram A on the left below), and it is zero when it flows parallel to the field (as in diagram B, on the right):
The directional relationship of I in the conductor, the external magnetic field and the force the conductor experiences
Motion of a current-carrying loop in a magnetic field
Commutator (rotates with coil)
Vertical position of the loop:
An electromagnet is the basis of an electric motor
An electric motor is all about magnets and magnetism: A motor uses magnets to create motion.
Opposites attract and likes repel. Inside an electric motor, these attracting and repelling forces create rotational motion.
A motor is consist of two magnets.
Armature or rotor
DC power supply of some sort