Basic Electrical Principles

Volt

The unit of measurement for electromotive force (symbol=V)

Conuctor

a material that offers little opposition to the flow of electrons-they are usually metals

Magnetism

an invisible force that has the ability to attract faros metals (iron, steal, nickel, and cobalt)

Direct

contact with a magnet

6 Voltage Sources

friction, pressure (Prozoelectricity), heat (Thermoelectricity), Light (Photoelectricity), chemical reaction, and magnetism

Electromagnetic Induction

is the production of a voltage in a conductor because of a change in the number of magnetic lies of force passing through the conductor

Voltage Source

is when a usable electromotive force is produced

Stroke

it with a magnet

Lines Of Force

lines used to illustrate and describe the pattern of the magnetic force

Electromagnetism

magnetism produced by passing an electrical current through a conductor

2 sources of magnetism

natural and artificial

Place

object that can be magnetized, such as a piece of iron into a magnetic field

Current

the drift or flow of electrons through a conductor (symbol=I)

EMF (ElectroMotive Force)

the force which has the ability to make electrons move

Resistance

the property of an electrical circuit that opposes the flow of electrons (electrical current)(symbol=R)

Magnetic Fields

the space surrounding a magnet where the magnetic force is felt

Ohm

the unit of measurement for resistance (symbol=O)

Ampere (Amp)

the unit of measurement of current (symbol=A)

Temporary Magnets

will lose most of their magnetism once the magnetizing force is removed

Permanent Magnets

will retain a great deal of magnetism