3. In a free space. the magnetic field intensity vector it is given by H=0.2 cos (wt-poc), [%] 3.1. Determine the electric field intensity vector, E (x,t), and its polarization? 3. 2. Find the total power passing through 3.2.1. a square plate of side 10cm on a plane z = 0. 3.2.2. a circular disc of radius 5cm on a HINT: Pt = ±1. Hax; E = Eocos (wt-x) plane x = 1