2. Given an electric field expressed as E(F) (xy + 2)+ (x'y+ 2)+ xi, %3D (a)...

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2. Given an electric field expressed as E(F) (xy + 2)+ (x'y+ 2)ý+ xi, %3D (a) Calculate the charge density. (b) Show that v xE = 0. 3. An electric potential in a spherically symmetric region is given by V(r) = 4 (1-) where A and A are constants. Determine the point at which the electric field is zero. 2. Given an electric field expressed as E(F) (xy + 2)+ (x'y+ 2)ý+ xi, %3D (a) Calculate the charge density. (b) Show that v xE = 0. 3. An electric potential in a spherically symmetric region is given by V(r) = 4 (1-) where A and A are constants. Determine the point at which the electric field is zero.