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Five point charges each of charge +q are...

Five point charges each of charge +q are placed on five vertices of a regular hexagon of side h as shown in the figure. Then

A

the forces on (-q) at O due to charges +q at A and D are balanced

B

the force on (-q) due to charges at D and E are balanced

C

the resultant forces on -q at O is `(q)/(4piepsilon_(0))(q^(2))/(h^(2))` along OE

D

The resultant force on -q at O is `(q)/(4piepsilon_(0))(q^(2))/(h^(2))` along OC.

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The correct Answer is:
A, D
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