The following data was obtained for the dependence of the magnitude of the electric field, with distance,form a refernce point O, within the chargedistribution in the shaded region figure.


(i) Identify the charge distribution and justify your answer.
(ii) If the potential due to this charge distribution, has a value V at the point A, what is its value at the point A'?

Explanation

(i) From the data given in the question, we observe that along line number 1, the magnitude of electric field varies inversely as the cube of the reference point i.e., `E prop 1/l^3`.
Hence, the charge distribution must be a short electric dipole. Moreover, as at 2nd line value of electric field E. is one half of the corresponding value E at 1st line, it shows that 1st line is the axial line of the short electric dipole and the 2nd line is the equatorial line of dipole.
(ii) As point A. lies on the equatorial line of dipole, hence, electric potential at point A. must be zero.