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What is a Component?
A component
is any device
in an electric
circuit
that transfers
electrical energy into another form.
A diode, motor, lamp,
LDR,
resistor and a thermistor
are all examples of electrical components.
Each component has its own circuit
symbol.
What is a Test Circuit for a Component?
The circuit diagram of
a test
circuit for a component is shown below.
A variable
resistor placed in series
with a component
can change the
voltage
across the component
and change the amount of current flowing through it.
A range
of values obtained from the
readings on
the voltmeter and ammeter
are used to make a plot of current
against voltage.
Links
Electricity
Resistance
Revision Questions
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