2. Atoms with a electrical charge
Atoms (or groups of atoms) in which
there are unequal numbers of
protons and electrons are called ions.
Usually, the number of protons and
electrons in atoms are equal. But
there are cases in which an atom can
acquire an electrical charge.
3. Conductors
●
Conductors is a material through which
electrons can flow easily.
●
Conductors are materials which conduct
electricity.
●
Most of the conductors are metals
●
Example:Water, Gold, Silver, Copper, Zinc,
Aluminum, Steel, Nickle, Cobalt, Brass
4. Insulators
●
A material that can be charged with
electrostatics is called a Insulator.
●
Insulators partially allow to pass electricity
through the material
●
Example:Wood, Glass, Plastic, Rubber,
Plants, Diamond, Silicon, Paper, porcelain,
Ebonite
5. Van De Graaff Generator
●
In 1931,Robert van de graaff invented the
machine.
●
There are many materials used they are:
●
Metal dome,Rubber belt,Polythene
roller,Perspex roller,and a Motor.
6. A picture of a man with a Van De
Graaff generator
