Two point charge $-q$ and $+q/2$ are situated at the origin and at the point $(a, 0, 0)$ respectively. The point along the $X$ - axis where the electric field vanishes is
Two point charge $-q$ and $+q/2$ are situated at the origin and at the point $(a, 0, 0)$ respectively. The point along the $X$ - axis where the electric field vanishes is
- A
$x = \frac{a}{{\sqrt 2 }}$
- B
$x = \sqrt 2 a$
- C
$x = \frac{{\sqrt 2 a}}{{\sqrt 2 - 1}}$
- D
$x = \frac{{\sqrt 2 a}}{{\sqrt 2 + 1}}$
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