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6.P.3A.4 Magnetism and Electricity
Transcript of 6.P.3A.4 Magnetism and Electricity
is the force of
of magnetic materials.
Surrounding a magnet is a
field that applies a force, a push or
, without actually touching an object.
Evidence of a magnetic field can be found in how the field
magnetic materials (including, but not limited to, a compass, iron filings, and paper clips).
An electric current flowing through a wire wrapped around an iron core forms a
Simple electric motors in action
the properties of magnets include:
Examples of devices created by magnetism and electricity
is formed when wire in an electric circuit is wrapped around an
core producing a magnetic field.
the magnet that results loses its magnetism if the electric current
Magnetism and Electricity
Simple Electric Motor
like poles of the magnets repel and unlike poles of the magnet attract
this causes the coil to
and thus changes electrical energy to mechanical energy
this rotating coil of
can be attached to a shaft and a blade in an electric fan
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a generator produces an electric current when a coil of wire wrapped around an iron core is
near a magnet
generators power plants produce electric energy for our homes
a generator contains coils of wire that are stationary, and rotating magnets are rotated by turbines.
are huge wheels that rotate when pushed by water, wind, or steam.
Thus mechanical energy is changed to electrical energy by a generator. Smaller generators may be powered by
Simple Electric Motors
changes electrical energy to
it contains an
that rotates between the poles of a magnet
the coal of the electromagnet is connected to a battery or other
of electric current
when a electric current flows through the wire in the electromagnet, a magnetic field is
in the coil
a coil of wire spinning around a magnet or a magnet spinning around a coil of wire can form an