Magnetic field - a region where other magnets or magnetic materials experience a force.
Magnetic field lines - lines that show which way a force would act. They go from north to south.
Compasses - show the directions of magnetic fields.
Permanent magnets - produce their own magnetic field.
Induced magnets - magnetic materials that turn into a magnet when they're put into a magnetic field.
Solenoid - a coil of wire that increases the strength of the magnetic field.
The Motor Effect - a current-carrying wire is put between magnetic poles it caused the magnet and the conductor to exert a force on each other.
Conductor - a material that allows energy to pass through it.
Magnetic flux density - how many field (flux) lines there are in a region.
Electromagnet - a magnet that runs of electricity.
The Generator Effect - creates a potential difference in a conductor and a current if the conductor is part of a complete circuit.
Potential difference - the driving force that pushes the charge around (volts V).
Alternators - generate alternating current.
Dynamos - generate direct current.
Oscilloscope - show how the potential difference generated in the coil changes over time.
Microphones - loudspeakers in reverse.
Transformers - change the size of the potential difference of an alternating current.
Step-up Transformers - step the potential difference up.
Step-down Transformers - step the potential difference down.
Also see Electrical Circuits
Links for Learning
Websites Videos Games Quizzes
Grade Gorilla: Magnets.
Bitesize: Electromagnets and motors.
Bitesize: Dynamos and transformers.
Bitesize: Electromagnetism and magnetism.
S-Cool: Magnetism & Electromagnetism.
Bitesize: The Motor Effect.
Physics Net: The Motor Effect.
Physics Net: The ac generator.
Bitesize: Loudspeakers and headphones.