08-16-2017, 09:19 PM
Electric Motors
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Magnetic Force On A Current Carrying Conductor
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 )
The force on a current-carrying conductor in a magnetic field:
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
Electric Motor
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.