Semiconductor, conductor and insulator

conductor -: A conductor is a substance that allows to flow electrons freely. So the current will flow and conductivity happens, conductivity happens conductivity happens so it is called a conductor Insulator -: it Is the bad conductor of the electricity Because it does not allow the electron to flow the subtrance, the substance the subtrance did not allow the electron to flow easily is known as insulator while while Semi conductor-:It is an insulator but it can be changed into conductor While changing the temperature in certain level and and it can be more helpful by using doping other materials.