Changing Circuits Fact Sheet
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1
2These are some of
A resistor makes it
the symbols used
difficult for electricity to
when drawing circuit
flow in a circuit.
diagrams.
Batteries come in
all shapes and sizes.
Mains electricity is delivered to homes and
businesses via a network of sub-stations,
cables and pylons called the National Grid.
Switches cause breaks in circuits,
interrupting the flow of electricity. In this tilt
Here we can see how a circuit is depicted
switch a blob of mercury completes the
by the symbols
circuit when the switch is turned by 90°
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