Where Can the Electric Field Be Zero Between Point Charges?

[dswatson]

A charge 2q and a charge -q sit a distance of d away from one another. In what region of space can the electric be zero? The answer has to be answered conceptually and not mathematically. Pictures would be helpful. I understand how to do the problem mathematically and that at some point between the two charges would be a spot where the E-field is zero. Can someone help me explain this? Thank you in advance.

 

[gneill]

Draw a picture. In each region of the line passing through the charge centers and defined by the charge placements, indicate the field strength and direction for each charge with arrowed lines. Discuss.

 

[dswatson]

Draw a picture. In each region of the line passing through the charge centers and defined by the charge placements, indicate the field strength and direction for each charge with arrowed lines. Discuss.

ok just drawing a picture with the arrowed lines was a huge help thank you