Electrodynamics q!!! Struggling with this module, if someone could get me started in the right direction that'd be great!!! An electric field is given by E(r,theta,phi,t)=A(sin theta/r)(cos(kr-wt)-(1/kr)sin(kr-wt)) in phi direction Show that E obeys all 4 of Maxwells equations in vacuum (no free charges and no free currents) for Maxwells 1st eqn I said that there is only a phi component in the electric field so the divergence is d/d(phi) of E. As there is no phi term in the equation this goes to zero. Is this correct? If so how do I continue with Maxwells other equations? Any help wiould be greatly appreciated!!!