2 conducting spherical shell have radii a=3cm nd b=6cm is filled with a dielectric of Er=8.A portion of dielectric is now removed so that Er=1 for 0<phir=8 for pi/2
2 conducting spherical shell have radii a=3cm nd b=6cm is filled with a dielectric of Er=8.A portion of dielectric is now removed so that Er=1 for 0<phir=8 for pi/2