A hexagon of side 8 cm has a charge 4 
at each of its vertices. The potential at the centre of the hexagon is.
A
B
C
D
Text Solution
Verified by ExpertsThe correct answer is:
A
As shown in the figure, O is the centre of hexagon ABCDEF of each side 8 cm. As it a regular hexagon OAB, OBC, etc are equilateral triangles.
OA = OB = OC = OD = OE = OF = 8 cm = 
The potential at O is
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