Suppose that in Fig. 22.15 both charges were positive. What would be the fluxes through each of the four surfaces in the example?
Solution 2DQ From Gauss’s law “The total electric flux through a closed surface is equal to the total (net) electric charge inside the surface, divided by ”o = Q enclosed E o Step 1 of 4: Surface A (shown in red) encloses positive charge so Q = +q encl So, the flux through A is = +q E o