As we explain in the previous topics , the electricity is produced by extraction of electrons from atoms . The energies that are used to produce an electricity are ;
1- Fraction :
Fraction of two materials , the electrons come out from one material to join with the other material . the material which loses the electrons gets positive charge and the material which attracted electrons gets negative charge . " This type called static electricity "
this material is like ( Nylon , Rubber , Glass , ..... )
2- Light :
When the light falls on the material , the electron emitted from the surface and producing the flow of current . this process like in the photocell .
3- Pressure :
This called " Piezoelectric " , extract the electrons of an atom due to applied pressure .
This process is like in the telephone . The sound waves produce electric waves .
4- Heat :
Join the end of two rods together and let the other two side free . If you heat at the joined part , there are a voltage generated between the other free sides . You can connect a Galvanometer between the two free sides and see the deflection of pointer . This method
is called " Thermo Coupling Method "
5- Chemical action :
The result of using a chemical reaction , electrons are extracted from the atom and producing electricity . This method is used to produce the primary cell ( torch) and secondary cell ( car cell ).
6- magnetism :
Due to magnetism the electronic are extracted from the atom . This is the principle of generators . In the generator , the electricity is produced by the magnetic poles and winding .
1- Fraction :
Fraction of two materials , the electrons come out from one material to join with the other material . the material which loses the electrons gets positive charge and the material which attracted electrons gets negative charge . " This type called static electricity "this material is like ( Nylon , Rubber , Glass , ..... )
2- Light :When the light falls on the material , the electron emitted from the surface and producing the flow of current . this process like in the photocell .
3- Pressure :
This called " Piezoelectric " , extract the electrons of an atom due to applied pressure .
This process is like in the telephone . The sound waves produce electric waves .
4- Heat :
Join the end of two rods together and let the other two side free . If you heat at the joined part , there are a voltage generated between the other free sides . You can connect a Galvanometer between the two free sides and see the deflection of pointer . This methodis called " Thermo Coupling Method "
5- Chemical action :
The result of using a chemical reaction , electrons are extracted from the atom and producing electricity . This method is used to produce the primary cell ( torch) and secondary cell ( car cell ).
6- magnetism :
Due to magnetism the electronic are extracted from the atom . This is the principle of generators . In the generator , the electricity is produced by the magnetic poles and winding .
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