Physical phenomena associated with the presence and flow of electric charge
is known as electricity. Electricity and electrical phenomenon have a lot of
applications in our day to day life and they also gives a wide variety of
well-known effects, such as lightning,
static electricity, electromagnetic induction and the flow of electrical current.
To understand electricity we need to understand the concept of electric charge first. Let us understand this concept using this example.
When two dry substances of different types are rubbed together and are then separated , each substances acquires property of attracting
light pieces of paper , dry leaves, straw etc. The substances being rubbed acquire something which give them this property. That something is called
The substances are said to have become charged after acquiring or loosing electric charge.
The fractional electricity produced have been found to be of two types i.e., positive electricity (charge) and negative electricity (charge). The to substances
rubbed together acquire equal and opposite charges.
|Woolen cloth or cat skin
||Amber, ebonite, rubber rod
||Rubber shoe soles