Electromagnetism and Electric Motors

This set of flashcards covers essential concepts related to electromagnetism, electric motors, and their applications in technology.

Ampere's Law

Describes the relationship between current and the magnetic field it produces in surrounding space.

Solenoid

A coil of wire that generates a magnetic field when carrying an electric current.

Right Hand Rule

A method to determine the direction of the magnetic field generated by a current; the thumb points in the direction of current, and fingers curl in the direction of the magnetic field.

Torque

A measure of the rotational force on an object, such as the force that causes a wire loop to turn in a magnetic field.

Electromotive Force (EMF)

The voltage generated by a changing magnetic field, which induces current in a circuit.

Direct Current (DC)

Electric current that flows in one direction only.

Alternating Current (AC)

Electric current that reverses direction periodically, commonly used for power supply.

Transformer

A device that transfers electrical energy between two or more circuits through electromagnetic induction, used to change voltage levels.

Magnetic Flux

The total magnetic field passing through a given area; changes in magnetic flux can induce an electromotive force.

Electric Generator

A device that converts mechanical energy into electrical energy through electromagnetic induction.