At which point (or points) in the given figure is the electric field zero N/C for the two point charges shown on the x axis ?

Options

A. The electric field is never zero in the vicinity of these charges.
B. The electric field is zero somewhere on the x axis to the left of the +4q charge.
C. The electric field is zero somewhere on the x axis to the right of the -2q charge.
D. The electric field is zero somewhere on the x axis between the two charges, but this point is nearer to the -2q charge.

Answer

C