A point charge Q is located on the axis of a disk of radius R at a distance b from the plane of the disk Show that if one fourth of the electric flux from the charge passes through the disk, then R = sqrt(3)b.

Question

A point charge Q is located on the axis of a disk of radius R at a distance b from the plane of the disk  Show that if one fourth of the electric flux from the charge passes through the disk, then R = sqrt(3)b.

anonymous · Answer

http://www.askiitians.com/forums/Electrostatics/13/7495/electrostatics.htm Even got this solution but i can't understand how the electix flux through a segment is know to that value? what is the proof ? how to solve this question?

anonymous · Answer

@amistre64  @theEric  yo ?