A point charge +Q is located on the x axis at x = a, and a second point charge -
ID: 2116450 • Letter: A
Question
A point charge +Q is located on the x axis at x = a, and a second point charge -Q is located on the x axis at x = -a. A Gaussian surface with radius r = 2a is centered at the origin. The flux through this Gaussian surface is _____.
ANSWER CHOICES:
* zero because the negative flux over one hemisphere is equal to the positive flux over the other.
* greater than zero.
* zero because at every point on the surface the electric field has no component perpendicular to the surface.
* zero because the electric field is zero at every point on the surface.
* none of the above.
Explanation / Answer
flux is greater than zero