notes
Charge
charge is the property of matter that is responsible for electrical phenomena by which two objects attract or repel each other
There is two type of charges
1(+)Ve positive charge
2 (–)ve negative charge
electrostatics it is branch of physics which deals phenomena and property of electric charges at rest
charge
charge is the property of matter that is responsible for electrical phenomena
charge is quantized q = ne
Coulomb’s Law:- according to coulombs law the electrostatic force or repulsion b/w two charged body is directly proportional to product of their charges and inversely proportional to the square of the distsnce between thgeem
Electric field
Electric field line
Electric field on the axis of charged ring
It'ssi unit is c/m
It is denoted by p , P =Qx2a
Electric field at axial position of dipole
Electric field at equitorial position iof dipole
Electric field at any point from of dipole
Torques
Charge
charge is the property of matter that is responsible for electrical phenomena by which two objects attract or repel each other
There is two type of charges
1(+)Ve positive charge
2 (–)ve negative charge
electrostatics it is branch of physics which deals phenomena and property of electric charges at rest
The substances are divided into four categories
Conductors, insulator,
semiconductor , dielectrics
charge
charge is the property of matter that is responsible for electrical phenomena
charge is quantized q = ne
Coulomb’s Law:- according to coulombs law the electrostatic force or repulsion b/w two charged body is directly proportional to product of their charges and inversely proportional to the square of the distsnce between thgeem
Coulomb's law in vector form
principle of superposition
according to principle of superposition total force on
charge due to another number of other
charges at rest is the vector sum of all the forces due to other charges
Electric field
Electric field line
an electric field line defined as a path of straight or
curved electric field
properties of electric field line
1 electric field line is continuous but do not form closed
loops
2 tangent on the curve of electric field line is direction of
electric field
3 electric field line is always normal to surface of conductor
4 the magnitude of the field is represented by density of
field line
5 electric field lines can not intersect each other
Electric field on the axis of charged ring
Electric Dipole .
an electric dipole consist of a pair of equal and opposite
charges separated by some small distance
It is vector quantity 
It'ssi unit is c/m
It is denoted by p , P =Qx2a
Electric field at axial position of dipole
Electric field at equitorial position iof dipole
Torques
Potential energy .
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