Technology Grade 7 - Simple electric circuits

What 3 things that you need to make an electric circuit ?

1. An energy source. This can be a cell or a stronger power source. 2. A complete circuit. There has to be an unbroken pathway of conducting materials through which the electrical current can flow. 3. A load. There has to be some form of resistance in the circuit. This could be in the form of a light bulb, a resistor, a motor or other electrical components.

Give an example of a simple electrical circuit

A circuit with of a cell, a switch, and a light bulb connected by insulated copper conducting wires. When the switch is flicked the lightbulb turns on

What is the symbol for BATTERIES IN A SERIES?

Batteries in a series

What is the symbol for BUZZER?

Buzzer

What is the symbol for an electro chemical CELL?

Cell

What is the symbol for CONDUCTING WIRES?

Conducting Wires

What is the symbol for LIGHTBULB?

Lightbulb

What is the symbol for RESISTOR?

Resistor

What is the symbol for SWITCH?

Switch

Why do we draw a circuit diagram?

To show how an electric circuit should be connected, and use symbols that show each component