The capacitor shown in Fig. 4-36 (P4.54) consists of two parallel dielectric layers. We wish to use energy considerations to
v (a) Let V1 and V2 be the electric potentials across the upper and lower dielectrics, respectively. What are the corresponding electric fields E1 and E2? By applying the appropriate boundary condition at the interface between the two dielectrics, obtain explicit expressions for E1 and E2 in terms of 1, 2, V, and the indicated dimensions of the capacitor.
(b) Calculate the energy stored in each of the dielectric layers and then use the sum to obtain an expression for C.
(c) Show that C is given by Eq. (4.136).
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Question Posted: March 28, 2010 23:44:54