Page 38 - Science Course 3 (Book 2)
P. 38
Mo9-L2b: What are the Two Types of Electric Circuits?
Transformation of electric energy occurs wherever
there is electric resistance in a circuit.
Electric resistance is a measure
of how dif cult it is for an
electric current to f ow in a
material.
Breaking, or opening, a series circuit
causes the electric current to stop
f owing through the entire circuit.
An electric conductor, Houses do not use series circuits. Instead, they use
such as a wire, is used parallel circuits.
to complete the circuit Charge easily move along
by connecting the energy conductive wires to reach A parallel circuit is an electric circuit where each
source to the electric the positive device connects to the electric source with a
device. separate path, or branch.
Copper and aluminum make good
wires for electric circuits because they
are excellent conductors.
A good conductor has little electric
resistance
In a parallel circuit, opening one branch does not
affect devices in the other branches.
In a series circuit, all components
are connected in a single loop.
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