7. ELECTRIC CIRCUITS AND ELECTRONICS

1. An electric circuit

An electric circuit is a pathway for the flow of electrons. It consists of the following parts, which are connected by wires.
Electric current is a continous flow of electrons through a circuit.

1.1 Parts of an electric circuit

Electric circuits consist of varirous parts:

Generators: Is a cells and batteries

Loads: Is a motors, resistor, ligth bulb and bells.

this is a resistor.

Switching devices: Is a switches, push buttons  and 3-way switches.

Is a push buttons.

1.2 Diagrams and symbols. 

We use a system of conventional symbols to simplify the visual representation of electric and electronic circuits, making them easier to understand.