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”