Download What are Complex Circuits?

WHAT ARE COMPLEX CIRCUITS?
PARALLEL CIRCUITS
• Parallel Circuit- has more than one
branch or pathway.
• Each branch of a parallel circuit may
hold several resistors where electrical
energy can be put to work.
• In a parallel circuit, not all branches
have to be on at the same time.
• Switches can control each branch of the
circuit independently.
ELECTROMAGNETS
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Electricity and magnetism are closely
related.
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•
Electromagnets- magnets that carry an
electrical current.
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Every electrical current produces a magnetic
force.
They are formed by a current flowing through
a wire in a circuit.
You can make an electromagnet stronger by
adding coils, increasing the current, or
placing a metal bar inside the coils.
ELECTROMAGNET VS. REGULAR MAGNETS
• An electromagnet can be switched on
an off.
• A regular magnet cannot.
• The strength of an electromagnet can
quickly be changed.
• A regular magnet cannot.
• Both types of magnets have a north
and south pole.
• An electromagnet is stronger at the poles
and weaker between the poles.
WAYS WE USE ELECTROMAGNETS
• Electromagnets are used in many
objects from motors to doorbells to
sound systems.
• In motors, magnets turn on and off
which allow motor parts to spin.