Download Electricity 2015

Define…
Electrons- a tiny, negative charge that
moves around the space outside the
nucleus of an atom
Current-the flow of a charge through a
material. Unit of measurement is A or
ampere
Circuit the complete path through
which electrons flow
Battery a temporary energy source
Electricity the movement of charged
particles that results in energy
Electric charge
Electric current
Magnetic field
Circuit
Conductor
Insulator
Resistance
Amperes
Magnetism
Electromagnet
Magnetic poles
Starting text pages 628
An electromagnet is a type of magnet in which the magnetic field is
produced by an electric current. The magnetic field disappears when the
current is turned off. Electromagnets usually consist of a large number of
closely spaced turns of wire that create the magnetic field.
Electromagnets are widely used
as components of other
devices, such as motors,
generators, speakers and MRI
machines.
Electromagnets are also used
in industry for picking up and
moving heavy iron objects such
as scrap iron and steel.
Workbook pages 231-233