Question

Three charges each of magnitude q are placed at the corners of an equilateral triangle, the electrostatic force on the charge placed at the center is: (each side of triangle is L)

• A. Zero
• B. $\frac{1}{4\pi {ϵ}_o}\frac{q^2}{L^2}$
  
• C. $\frac{1}{4\pi {ϵ}_o}\frac{3q^2}{L^2}$
  
• D. $\frac{1}{12\pi {ϵ}_o}\frac{q^2}{L^2}$

Answer 1

The correct option is A Zero

In the following figure since \$\left|\overrightarrow{F_A}\right|=\left|\overrightarrow{F_B}\right|=\left|\overrightarrow{F_C}\right|$ and they are equally inclined with each other, so their resultant will be zero.