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In a regular polygon of n sides, each co...

In a regular polygon of `n` sides, each corner is at a distance `r` from the centre. Identical charges of magnitude `Q` are placed at `(n-1)` corners. The field at the centre is

A

`k Q/(r^(2))`

B

`(n-1) k Q/(r^(2))`

C

`n/(n-1) kQ/(r^(2))`

D

`(n-1)/n k Q/(r^(2))`

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The correct Answer is:
A
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