Question

Two identical parallel plate (air) capacitors C₁ and C₂ have capacitances C each. The between their plates is now filled with dielectrics as shown. If the two capacitors still have equal capacitance, obtain the relation between dielectric constants K, K₁ and K₂.

Answer 1

Let A → area of each plate.

After inserting respective dielectric slabs:

K = 1/2(K₁ + K₂)