^Series dielectrics in a capacitor

Series dielectrics in a capacitor

If three dielectric slabs of thickness t₁, t₂ & t₃, dielectric constants K₁, K₂ & K₃ are placed between the plates of a parallel plate capacitor as shown, then the combination behaves as different dielectrics dividing the spacing are considered as capacitors connected in series.

Capacitance of this is given by