MHT CET 2026 Physics question
A charge 'Q' is placed at each corner of a cube of side 'r'. The potential at the centre of the cube is ( = permittivity of free space)
Answer: (A)
Solution
A cube has 8 corners, each at a distance equal to half the body diagonal from the centre: . Potential is a scalar, so \frac{1}{4πε_0}$ = · = = {πε_0
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