1. A parallel-plate capacitor with area 250cm² and separation 3mm contains three dielectrics with interfaces normal to Ēand D, as follows: layer 1 -- &₁₁ =2, d₁ = 0.5mm; layer 2 -- &₁2 =4, d₂ = 0. 25mm; layer 3 -- &₁3 = 5, d3 = 0.2mm. The uni-form surface charge density is 1µC/m². Find (a) the capacitance of the capacitor, (b) the voltage between the plates, (c)magnitude of D between the parallel plates, and (d) energy density in layer 2.

According to the problem, the parallel plate capacitor has an area of 250 cm2 . The layers are…

Answered: 1. A parallel-plate capacitor with area…

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