Conduction

Concept sheet | Science and Technology

Secondary 3 (AST)

Conduction is an electrical function performed by any electrical component that allows current to flow through a circuit in a system.

Electrical components responsible for conduction are generally made from materials with excellent electrical conductivity, such as metals.

Example

The wires in these cables are made of copper, a metal with excellent electrical conductivity.

This type of wire is used to connect the various electrical components in a circuit.

Two cables are made of several copper filaments.

The copper wires in two cables

Source: vldkont, Shutterstock.com
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Secondary 4

Conduction is an electrical function performed by any electrical component that allows current to flow through a circuit in a system.

Electrical components responsible for conduction are generally made from materials with excellent electrical conductivity, such as metals.

Example

The wires in these cables are made of copper, a metal with excellent electrical conductivity.

This type of wire is used to connect the various electrical components in a circuit.

Two cables are made of several copper filaments.

The copper wires in two cables

Source: vldkont, Shutterstock.com

Printed Circuits (EST and AST)

A printed circuit is a component that performs the conduction function in an electronic circuit. It is built on a rigid fibreglass board and is covered by a plastic protector, which is often green. A network of very thin conductors, called traces, usually composed of silver, copper or gold, is etched between the fibreglass board and the plastic protection. The traces conduct the current from one electronic component to another. Together, the fibreglass, protector, traces and other electronic components form a structure called a printed circuit board (PCB). The components are integrated into the electronic circuit through holes drilled in the PCB.

The advantage of using PCBs in electronic devices is that they allow complex circuits to be contained in a very small space.

A segment of a printed circuit board (PCB) that includes a fibreglass base, a green protection layer, silver traces and other electronic components.

A printed circuit

Source: Adapted from Vasyl Rohan, Shutterstock.com
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