Question

Two charges $q$ and $-3q$ are fixed on $x$-axis separated by distance $d$. Where should a third charge $2q$ be placed from $A$ such that it will not experience any force?

• A. $\frac{d-\sqrt{3}d}{2}$
• B. $\frac{d+\sqrt{3}d}{2}$
• C. $\frac{d+3d}{2}$
• D. $\frac{d-3d}{2}$

Answer 1

Answer: (B)

$\frac{d+\sqrt{3}d}{2}$

Answer 2