Summaries after sample
, U1: Revision of simple
U2: Circuit diagrams
circuit components
and connections
Simple circuit components
and circuit connections
• Input devices – electrical cells, generators and
solar panels.
• Output devices - lamps (light), motors
(movement), buzzers (sound), heaters (heat)
and resistors.
C12: Simple • Switches - control outputs in electrical circuits.
Sample
circuits
Devices that have more
than one function
Summaries after sample •
Electric circuits
If there is no resistance to the current,
the current is very strong and causes a
•
•
Electric motors are output devices that also
function as input devices by generating
electrical energy.
Electric motors used to drive a locomotive
(output devices) can work as input devices
short circuit. when used as brakes.
• Properly wired electrical circuits are • Light emitting diodes (LEDs) create light as
protected from short circuits by circuit an output device.
breakers on the distribution board. • LEDs function as process/control devices
when they let electric current through in 1
direction.
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, Sample
Summaries after sample