In a regular polygon of \( \mathrm{n} \) sides, each corner is at a distance \( r \) from the ce...

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In a regular polygon of \( \mathrm{n} \) sides, each corner is at a distance \( r \) from the center. Identical charges are placed at \( (n-1) \) corners. At the center, the intensity is \( E \) and the potential is \( V \). The ratio \( V / E \) has magnitude.
(a) \( r n \)
(b) \( r(n-1) \)
(c) \( (n-1) / r \)
(d) \( r(n-1) / n \)
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