Question

The electric field inside a region surrounding the origin is uniform and along the $x-$axis. A small circle is drawn with the center at the origin cutting the axis at points $\text{A}$, $\text{B}$, $\text{C}$ and $\text{D}$ having coordinates $\left(a,0\right)$, $\left(0,a\right)$, $\left(-a,0\right)$ and $\left(0,-a\right)$. Then potential is minimum at

• A. $\text{A}$
• B. $\text{B}$
• C. $\text{C}$
• D. $\text{D}$

Answer 1

The correct option is A $\text{A}$

As we know that electric field lines move from high potential to low potential. Therefore,
$V_c\Rightarrow Maximum$
$V_B=V_D$
$V_A\Rightarrow Minimum$

So, option $\left(a\right)$ is correct.

Why this question? Concept: Potential decreases in the direction of electric field.