Electricity

• Electricity is a form of energy.
• There are two types of electricity: electrostatics (or) static electricity and electrodynamics (or) current electricity.
• Electrostatic is the study of electric charge at rest.
• Electrodynamics is the study of moving electric charges and their interaction with magnetic and electric fields.
• Electric charge (or) electricity, can be provided by batteries and generators.
• Some materials become charged when they are rubbed, these charges are electrostatic charge or static electricity.
• The two kinds of static electric charge are positive charge and negative charge.
• The uses of static electricity are electrostatic precipitators, inkjet printers and photocopiers.
• Another example of static electricity is lightning discharge.
• Electrical energy can be transformed into other forms of energy, such as heat energy, mechanical energy, light energy and sound energy.
• Electrical energy is used in domestic electric appliances, in industries, transportation and communication works.
• In technologically advanced countries scientists are trying to generate considerable amount of electrical energy from the wind, from the sea and from the sun.