Sketch a graph which correctly represent variation of electric field E for a dipole at different points among the line connecting the two charges with procedure

Q. Two point charges are kept at a certain distance from one another. Figure represents the variation of the potential along the straight line connecting the two charges. At what point is the electric field zero?

Q. Which of the following graphs correctly represents the variation of $\overrightarrow{E}$ vs $r$ for two point charges $+q$ and $-2q$ kept some distance apart along the line joining these two charges?

Q. Which of the following graphs correctly represent the variation of electric field $E$ vs $r$ for a ring, where $r$ represents the distance from the centre of ring along its axis.

Q. Which of the following correctly represents the electric field lines for a spherical conductor having a spherical cavity with a charge $Q$ (not at the center) ?

Q. Represent graphically the variation of electric field with distance, for a uniformly charged plane sheet.