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Electrostatics-Electric Field(E.F.)

S K Singh
24/03/2017 0 0

Electric Field-

It is defined as- E = F/q(test charge)

means force experienced by the unit charge. Its unit is  Newton/coulomb.It is a vector quantity.

Electric Field due to a single charge at some distance r:-

since Columbian force F=K QXq/Rx

therefore, E = F/q = kQ/rxr.

Properties of electric field lines:-

1- E.F. lines originates from +q charge and ends at -q charge.

2- E.F.lines are not continuous closed loops.

3-Tangent drawn at any point gives the direction of E.F. at that point.

4- Two E.F. lines can not intersect each other.If they will intersect, then two tangents can be drawn, giving two directions a the same point which is not possible.

5- E.F.line contract longitudinally.

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