Two point charges $-5 \mu \mathrm{C}$ and $+5 \mu \mathrm{C}$ are placed at $\mathrm{A}$ and $\mathrm{B}$…
Two point charges $-5 \mu \mathrm{C}$ and $+5 \mu \mathrm{C}$ are placed at $\mathrm{A}$ and $\mathrm{B}$ respectively on a straight line separated by $5 \mathrm{~cm}$. At a point $\mathrm{C}$ if the resultant field is parallel to the line joining the points $A$ and $B$ then