The electric field is zero inside a conductor so the potential is constant. The potential is continuous, it is the same at the inner side of the outer surface as outside: V=kq/c, and stays the same in the whole shell, even at radius b: V (b)=kq/c. The discussion revolves around calculating the electric potential inside an insulating sphere using Gauss' Law. The user initially misapplied the dot product in the integral for electric potential , leading to an incorrect conclusion that potential increases as one moves away from the charged sphere. After clarification, it was determined that reversing the integration direction resolves the sign issue, aligning the calculations with the expected result that potential decreases as one moves ... Derive an expression for electric potential due to an electric dipole at any point ( r, 0 ). Prove that the electric potential at a point on axial is maximum and at equatorial is zero? Electric potential is defined as the work done to move per unit positive charge from one point to another point. The SI unit of electric potential is volt(V).