Physics Magnetism Key Word Test due 12/1/2026

Repulsion

The force acting between two north poles

Magnetic Pole

The end of a magnet

Magnetic Field

A region where there is a force on magnetic materials or current carrying wires

Nickel

A magnetic material

Electromagnet

Magnet formed by an electric current flowing through a solenoid with an iron core

Step up transformer

Device that increases an alternating potential difference from the primary to secondary coil

Induced magnet

A material that is magnetic only when it is placed in the magnetic field of another magnet

Split ring commutator

Device in a d.c motor that allows the motor to spin without reversing direction

Attract

When a force between two objects draws them closer together they will do this

Permanent Magnet

Object or material that produces its own magnetic field

Dynamo

A device that produces a direct current from the rotation of a coil in a magnetic field

Solenoid

A coil of current carrying wire that generates a mangeitc field

Step down transformer

Device that decreases an alternating potential difference

Correlation

A link or association between two variables, so that one changes so does the other

Motor Effect

Interaction between a magnetic field and a current-carrying wire that causes the wire to move

Gradient

The slope of a graph

National Grid

Network of cables that links power stations to consumers across the country

Tesla

Unit of magnetic flux density

Fleming’s left hand rule

Shows which way a current carrying wire will move when placed in a magnetic field

Magnetic Flux Density

The amount of magnetic flux in a given area