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9
2.5
BASIC ELECTRIC CIRCUIT:
(understand concepts such as conductivity and insulation)
An Electric circuit is a complete electrical path that will make it possible for an electric
current (Amperes- denoted with the letter “I”). to flow from the positive terminal of a battery,
through the conductors and components to the negative terminal. The battery supplies the
force - electrical VOLTAGE and is denoted with the letter “V”.
A basic electric circuit consist of die following:
 a Power supply - cell or battery (Energy source)
 Conductors - usually insulated
 Switch - when the switch is closed we have a completed circuit.
 A load eg. lamp, resistor, electric motor etc.
RESISTOR
POWER SOURCE =
9 V BATTERY
SWITCH
Figure 3.5