Concept of Static Electricity
The Concept of Static Electricity
Explain the concept of static electricity
Static electricity refers to the electric charges stored on a conductor.
The Orign of Charges
Explain the origin of charges
a plastic pen is rubbed with a cloth, it acquires the property of
attracting small bits of paper or light objects. In this case, the
plastic pen is said to be electrified.
by rubbing was observed a long time ago by ancient Greeks. After the
discovery of electricity, things were grouped into two groups, electrics
and non-electrics. Electrics refer to things which are readily
electrified while non-electrics are reverse of the former.
The two Types of Charges
Identify the two types of charges
There are two types of charge:
- positive charge
- negative charge
a polythene rod A rubbed with fur. Bring another polythene rod B rubbed
with fur up to the rod A. Take a plastic rod and rub it with fur. Bring
the plastic rod to up to the suspended rod A. Repeat the exercise with
acetate and glass rod rubbed with silk cloth.
electrified polythene rod repels another electrified polythene rod. An
acetate rod rubbed with silk repels another acetate rod rubbed with silk
cloth but it attracts a plastic rod rubbed with fur.
and plastic when rubbed with fur becomes electrified with the same kind
of electricity known as negative electricity (charge).
and glass when rubbed with silk cloth becomes electrified with the same
kind of electricity called positive electricity(charge).
Charging is the process of electrifying a body.
positively charged body carries positive charges and a negatively
charged body carries negative charges.The symbols used for positive and
negative charges are + and – respectively.
The Fundamental Law of Static Electricity
State the fundamental law of static electricity
The Fundamental law of electrostatic charges states that:“Like charges repel each other while unlike charges attract each other”
Charging Bodies Using Different Methods
Charge bodies using different methods
order to understand the process of charging we have to understand the
structure of bodies or things. All bodies are made up of extremely
small, indestructible bits of matter called atoms.
atom consists of a nucleus surrounded by electrons. The nucleus
consists of proton and neutron.The protons are positively charged while
electrons are negatively charged and the neutrons are neutral.
The whole atom is electrically neutral because it contain equal number of protons and electrons.
The following are the methods of charging;