Imagine a short dipole at the center of a spherical surface. If the magnitude of the electric field at a certain point on the surface of he sphere is `10NC^(_1)` then which of the following cannot be the magnitude of the electric field anywhere on the surface of the sphere?

Options

A. `4 N//C`
B. `8 N//C`
C. `16 N//C`
D. `20 N//C`

Answer

A

Explanation

If `E_("axial") = 10 N//C`
then `E_(eq) = 5N//C`
If `E_(eq) = 10 N//C`
then `E_("axial") = 20 N//C`
So magnitude of electric field at any point `5N//C le E le 20 N//C`