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Five equal charges each of value q are placed at the corners of a regular pentagon of side a. The electric field at the centre of the pentagon is

A

Zero

B

`(1)/(4pi in_(0)).(6Q^(2))/(a^(2))`

C

`(1)/(4pi in_(0)).(Q^(2))/(a^(2))`

D

`(1)/(4pi in_(0)).(6Q^(2))/(a^(2))`

Text Solution

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The correct Answer is:
A
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