Posted by Robert on Tuesday, August 14, 2012 at 11:55pm.
Let the point where E=0 be to the left from the charge q and separated by distance “x” from q and by distance (2+x) from -2q. Then
kq/x²=k2q/(2+x)²,
x²-4x-4 = 0
x= 2±√(4-4) =2.
The point where E=0 is x= - 2m.
Let the point where φ=0 be to the right from q and separated by distance x from it.
kq/x =k2q/(2-x),
x=2/3 m
The point where φ =0 is x=+ 2/3 m.
Related Questions
physics - A charge of -2q is placed a distance r from the origin and a charge of...
Physics - Charge A and charge B are 2.00 m apart, and charge A is +3.90 C and ...
physics - A point charge Q= 4.60 uC is held fixed at the origin. A second point ...
physics - A charge of +Q and a charge of +2Q are separated by a distance r. The ...
Physics - A charge q =+ 4.11 x 10 - 9 C is placed at the origin, and a second ...
physics - Suppose a charge of -2.30 µC is at the origin and a charge of 2....
physics - A charge of +q is located at the origin, while an identical charge is ...
physics - A point charge with charge q1 is held stationary at the origin. A ...
physics - A uniform electric field of magnitude 333 N/C is directed along the +y...
Physics please clarify - A charge of +2q is fixed to one corner of a square, ...
For Further Reading
