Question
Two point electric charges of unknown magnitude and sign are placed a distance d apart. The electric field intensity is zero at a point not between the charges but on the line joining them. Write two essential conditions for this to happen.
Solution
Two essential conditions for this to happen is:
i) Both charges cannot be of the same sign.
ii)The point where electric field intensity has to be 0 is closer to the smaller charge as compared to the charge larger in magitude.
