Problem 2 Consider the three charges +o,+20,and -O,and a mathematical spherical surface(it does not physically exist)as shown in the figure below. ● ● +2Q Q What is the net electric flux on the spherical surface between the charges?Briefly explain your answer. Answer Only the positive charge enclosed in the surface contributes to the electric flux on that surface.Since the charge enclosed is positive,the electric flux on the surface is also positive and equal to +/.All three charges do contribute to the electric field.However if a charge is outside a closed surface then the electric flux on that surface due only to that charge is zero.The two charges +20 and-O lie outside the surface,so the electric flux on the surface due to those two charges is zero. 22 Problem 2 Consider the three charges +Q , +2Q , and !Q , and a mathematical spherical surface (it does not physically exist) as shown in the figure below. What is the net electric flux on the spherical surface between the charges? Briefly explain your answer. Answer Only the positive charge +Q enclosed in the surface contributes to the electric flux on that surface. Since the charge enclosed is positive, the electric flux on the surface is also positive and equal to 0 +Q / ! . All three charges do contribute to the electric field. However if a charge is outside a closed surface then the electric flux on that surface due only to that charge is zero. The two charges +2Q and !Q lie outside the surface, so the electric flux on the surface due to those two charges is zero