coulomb's law of electrostatic

 The examination of electromagnetic marvels that happen when there are no moving charges—i.e., after a static congruity has been set up. Charges show up at their equilibrium positions rapidly, considering the way that the electric force is exceptionally astounding. The mathematical strategies for electrostatics make it possible to calculate the allocations of the electric field and of the electric potential from a known arrangement of charges, transmitters, and covers. On the other hand, given a lot of transports with known potential outcomes, it is practical to find out electric fields in regions between the transmitters and to choose the charge appointment outwardly of the courses. The electric energy of a lot of charges extremely still can be seen from the viewpoint of 

Force (f)=k q1×q2÷r×r ×r Cape

In the example, the chargein the electric field produced by the charge Q2. This field has the valueEquation.in newtons per coulomb (N/C). (An electric field can also be expressed in volts per metre [V/m], which is the equivalent of newtons per coulomb.) The electric force on Q1 is given byEquation.in newtons. This equation can be used to define the electric field of a point charge. The electric field E produced by charge Q2 is a vector. The magnitude of the field varies inversely as the square of the distance from Q2; its direction is away from Q2 when Q2 is a positive charge and toward Q2 when Q2 is a negative charge. Using equations (2) and (4), Electricity and Magnetism. Electricity. Electrostatics. Static electricity. [Calculating the value of an electric field - equation 4]