A symbol is a drawing, shape, or object that represents an idea, object, or amount of something. The most common symbols are letters, which are symbols of words and sounds.

Why do people use symbols?

Symbols take the form of words, sounds, gestures, ideas or visual images and are used to convey ideas.

Why do people use electrical symbols?

A circuit diagram, is a drawing that show the connections and components in an electrical circuit. It makes it easier to understand how to builod a particular circuit. We use symbols for the components in circuit diagrams because it is quicker and requires less artistic skill.

Image below shows electrical symbols.

How can you tell if a circuit will work by looking at the diagram?

Electricity can only travel if there is a complete circuit. Electricity travels from the power source, such as a cell or battery. If there is a gap in the circuit, no electricity will flow.

Batteries and components (such as a bulb, motor, buzzer or switch) must be put together for the circuit to work.

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