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The 4 main components of a circuit are:

(1) Switch - turns electric current on and off, closes and opens a circuit.

(2) Load - resists the flow of current and converts electrical energy into another form of energy (ex. light bulb)

(3) Wires - thin strips of insulated copper conducts the electric current, allowing it to pass through like a pathway, makes up the circuit.

(4) Source - gives the circuit the required electrical energy

A resistor can also be included as one of the components

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