# electric field

#### ronn

Joined Nov 1, 2007
16
i need to solve the point where the electric field is zero if q1=-5 coulumb and q2=+2 coulomb.both charge is located horizontally wher q2 is at the right side of q1
thanks

#### mik3

Joined Feb 4, 2008
4,843
i need to solve the point where the electric field is zero if q1=-5 coulumb and q2=+2 coulomb.both charge is located horizontally wher q2 is at the right side of q1
thanks
This point is at infinity theoritically

#### scubasteve_911

Joined Dec 27, 2007
1,203
"This point is at infinity theoritically"

Untrue, the electric fields will theoretically span to infinity, the field will approach zero, of course, at infinity. You will find the following link extremely useful, since it has a similar problem. I am still repressing my electromagnetics physics class and do not wish to look at it again

http://physics.bu.edu/~duffy/PY106/Electricfield.html

Steve

Steve

#### omnispace

Joined Jul 25, 2007
27
I believe you need to know the distance between the charges, before you can find the point where the field is zero.