A) zero
B) half from potential at surface of sphere
C) equal from potential at surface of sphere
D) twice from potential at surface of sphere
Correct Answer: B
Solution :
Inside a charged sphere, electric field intensity at all points is zero and electric potential is same at all the points. Electric potential, \[V=\frac{1}{4\pi {{\varepsilon }_{0}}}\frac{q}{R}\] Therefore, potential at the centre is equal to the potential at the surface.
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