is the formula to calculate the electric potential.

Q. Calculate the electric potential at point A where x = - d.

Q. The electric potential existing in space is $V(x,y,z)=A(xy+yz+zx)$. Write the dimensional formula of $A$ :

Q. The electric potential at a point $(x,y)$ in an electric field is given by $V=6xy+y^2-x^2$ Calculate the electric field at that point.

Q.

Q.

Three points A, B and C are shown for different systems of charge configuration. A charge +Q is uniformly distributed in I, II and III but a point charge +Q is involved in IV. E represents electric field, V represents electric potential. $(K=\frac{1}{4\pi {\epsilon }_0}andR=Radiusineachcase)$

Which of the following options is the correct combination for point C?