Electrostatics concept summary

1. The force with which two charges interact is not changed by the presence of the other charges.


2. Net force on any charge F=F1+F2+F3+F4+.....


3. Electric field lines extend away from the positive charge and towards thge negative charges.


4. Electric field produces the force so if a charge q is placed in the electric field E the force experience by the charge is F=qE


5. Principle of superposition also applies to electric field

so E=E1+E2+E3+E4+......


6. E is the electric field present due to all charges in the system not just the charge inside in the Gauss law.


7. Flux crossing a closed surface does not depend on the shapes and size of gaussian surface.


8. ∫E.dl over closed path is zero.


9. Electric Potential is scalar quantity.


10. Potential at point due to system of charges will be obtained by the summation of potential of each charge at that point V=V1+V2+V3+V4+..........



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