Side length of equilateral triangle is $d. P$ is mid of side then potential at point $P, V_P$ is
Side length of equilateral triangle is $d. P$ is mid of side then potential at point $P, V_P$ is
- A
$\frac{Q}{{2\pi { \in _0}d}}\left[ {2 + \sqrt 3 } \right]$
- B
$\frac{Q}{{2\pi { \in _0}d}}\left[ {2 + \frac{1}{{\sqrt 3 }}} \right]$
- C
$\frac{Q}{{4\pi { \in _0}d}}\left[ {4 + \sqrt 3 } \right]$
- D
Zero
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