Electromagnetism and Electromagnetic Induction

A collection of vocabulary flashcards based on electromagnetism and electromagnetic induction.

Electromagnetism

The principle established by Hans Oersted that shows electric current creates a magnetic field.

Right-Hand Rule

A method to determine the direction of magnetic flux around a wire carrying current.

Solenoid

A coil of wire that when coiled creates a concentrated magnetic field.

Electromagnetic Induction

The process where a moving conductor through a magnetic field induces an electric current in the conductor.

Induced Voltage

The voltage that is generated based on the number of coils and the relative motion of the magnetic field.

Lenz's Law

States that an induced current flows in the direction that opposes the change in magnetic field that induced it.

Mutual Induction

The process where a primary coil induces a current in a secondary coil due to relative motion.

Self-Induction

The induction of a current within the same coil due to changes in its own magnetic field.

Alternating Current (AC)

An electric current that reverses direction periodically, creating a fluctuating magnetic field.

Current Flow

The flow of electric charge, which is considered positive flow despite negative electron movement.

Faraday's Law of Induction

States that the induced electromotive force (emf) in a closed circuit is directly proportional to the rate of change of the magnetic flux through the circuit.

Transformer

An electrical device that transfers electrical energy between two or more circuits through electromagnetic induction.

Capacitor

A component that stores electrical energy in an electric field, used in electronic circuits.

Magnetic Field

A vector field that describes the magnetic influence on charged particles, electric currents, and magnetic materials.

Polarity

refers to the switching of the poles; that is, which end of the magnetic field is the north pole and which is the south pole.