The bar graph displays the electric flux passing through a cubical flux detector and several spherical flux detectors. Drag each surface and observe flux readings. The resolution of the detector is 1mC and the gray sphere is there for your reference only.
Describe the charge distribution.
There is a uniform positive charge distribution at a radius smaller than the radius of the gray sphere and a very small negative charge distribution at a radius greater than the radius of the gray sphere.
See Giancoli-PA: Appendix D, Giancoli-SE: 22-2.
Physlet problem authored by Mario Belloni.