Magnetic Field and Electric Motors

These flashcards cover key concepts related to electric motors and magnetic fields, helping reinforce understanding for exam preparation.

Motor

A device that converts electrical energy into mechanical motion.

Electromagnet

A type of magnet whose magnetic field is produced by an electric current.

Magnetic dipole moment (μ)

A vector that represents the magnetic strength and direction of a magnet or current loop.

Torque

A measure of the force that can cause an object to rotate about an axis.

Current (I)

The flow of electric charge, typically measured in amperes (amps).

Magnetic field (B)

A vector field that describes the magnetic influence on moving electric charges, electric currents, and magnetic materials.

Stable equilibrium

A state in which a system tends to return to its original position after a slight disturbance.

Unstable equilibrium

A state in which a system tends to move away from its original position after a disturbance.

Faraday's Principle

The principle that describes how a changing magnetic field can produce an electric current.

Magnetic permeability (μ)

A measure of how easily a magnetic field can penetrate a material.

Induced electromotive force (induced EMF )

The voltage generated by changing the magnetic environment of a coil of wire.

Potential energy in magnetic fields

Energy stored within a magnetic field, associated with the position of magnetic dipoles.