Identical charges – q each are placed at 8 corners of a cube
of each side b. Electrostatic potential energy of a charge
+ q which is placed at the centre of cube will be
(a) -4√2q²/πℰ₀b (b) -8√2q²/πℰ₀b
(c) -4q²/√3πℰ₀b (d) -8√2q²/πℰ₀b
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Answer:
the correct answer is c
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