STANDARDPhysics-Electrostatics
STANDARD Physics Electric Potential MCQ Question
Type: MCQ-numerical-Medium
A cube of side x has a charge q at each of its vertices. The potential due to this charge array at the centre of the cube is
A
4q/(3πε₀x)
B
4q/(√3πε₀x)
C
3q/(4πε₀x)
D
2q/(√3πε₀x)
Correct Answer
Option B
Detailed Explanation
The length of diagonal of the cube of each side x is √3x = x√3. Distance between centre of cube and each vertex, r = x√3/2. Now, potential, V = q/(4πε₀r).
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