An infinite sheet with a negative surface charge density runs parallel to the x axis. Another infinite sheet with an equal but opposite sign surface charge runs parallel to the y axis. The difference in electric potential from the point x = +5.2 m, y = +3.1 m to the point x = +3.1 m, y = +5.2 m is 8.6 x 106 V. What is the surface charge density in micro-coulomb/m2 for the sheet on the y axis?

Question

An infinite sheet with a negative surface charge density runs parallel to the x axis.  Another infinite sheet with an equal but opposite sign surface charge runs parallel to the y axis.  The difference in electric potential from the point x = +5.2 m, y = +3.1 m to the point  x = +3.1 m, y = +5.2 m is 8.6 x 106 V.  What is the surface charge density in micro-coulomb/m2 for the sheet on the y axis?