Magnetism quiz

Electric Motor

A device that converts electrical energy to mechanical energy by using the magnetic forces between an electromagnet and a permanent magnet to make a shaft rotate.

Electromagnet

Temporary magnet created when there is a current in a wire coil.

Electromagnetic Force

The attractive or repulsive force between electric charges and magnets.

Electromagnetic Induction

Process by which electric current is produced in a wire loop by a changing magnetic field.

Electromagnetism

The interaction between electric charges and magnets.

Faraday’s Law

In general, an electric field is induced in any region of space in which a magnetic field is changing with time; the magnitude of the induced electric field is proportional to the rate at which the magnetic field changes.

Galvanometer

A device that uses an electromagnet to measure electric current.

Generator

A device that uses electromagnetic induction to convert mechanical energy to electrical energy.

Magnetic Domain

A group of atoms in a magnetic material in which the magnetic poles of the atoms are aligned in the same direction.

Magnetic Field

A region surrounding a magnet that exerts a force on other magnets and objects made of magnetic materials.

Magnetic Pole

A region on a magnet where the magnetic force exerted by a magnet is strongest; like poles repel and opposite poles attract.

Magnetism

The properties and interactions of magnets.

Solenoid

A cylindrical coil of wire, used to produce a magnetic field when an electrical current passes through the wire.

Transformer

A device that uses electromagnetic induction to increase or decrease the voltage of an alternating current.

Turbine

A large wheel that rotates when pushed by steam, wind, or water and provides mechanical energy to a generator.