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