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  4. The electric potential at centre of metallic conducting sphere is

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Q. The electric potential at centre of metallic conducting sphere is

Rajasthan PETRajasthan PET 2009

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.