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Q.

Eight identical point charges each charge q are placed at eight corners of cube of side ‘l’. Then potential at centre of cube is

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a

Zero

b

14πε0 8q3l

c

12πε0 16q3l

d

14πε0 16q3l

answer is D.

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Detailed Solution

From corner to centre distance=32L   and ‘8’ corner are having same charge.

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