Electric Field Intensity Due To A Point Charge

Electric Field Intensity Due To A Point Charge

Suppose we have to calculate electric field intensity at any point P due to a point charge q at O, where OP= r.

Consider a small positive test charge q0> at P.

According to Coulomb’s law, force at P is

F = 1/4Пεo qq0/r2 ar

where ar is unit vector directed from q towards q0.

As                    E = F/q0

Therefore by putting value of F in above equation, we get

E =       1/4Пεo q/r2 ar Continue reading “Electric Field Intensity Due To A Point Charge”

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