1.1.1 ATOM AND ITS PARTS

An atom is the smallest basic unit of an element that keeps the properties of that element.

Part of atom

1. protons(+ charge)
2. neutrons(0)
3. electrons(- charge).

• Electrons  are very important in electronics because their movement produces electric current.
• Electrons are very small particles found inside atoms. They have a negative electrical charge (-)
• Electric charge is a property of matter that causes electrical attraction or repulsion and the flow of electric charge through a conductor is called Electric current

1.1.2. WHAT IS ELECTRONICS?

Electronics is the branch of science and technology that deals with the control and movement of electric current using electronic components and circuits.

Electronics is the branch of physics which deals with the movement or flow  of electron in conductor