The region between the two plates of Figure 6.5 is filled with two perfect dielectric media having permittivities P1 for 0 6 x6 tand P2 for t6 x6 d.
(a) Find the solu- tions for the potentials in the two regions 0 6 x6 tand t6 x6 d.
(b) Find the potential at the interface x= t.
(c) Find the capacitance of the arrangement.