MCQ
A parallel plate capacitor of area $A,$ plate separation $d$ and capacitance $C$ is filled with three different dielectric materials having dielectric constants $K_1,K_2$ and $K_3$ as shown. If a single dielectric material is to be used to have the same capacitance $C$ in this capacitor, then its dielectric constant k is given by
- A$\frac{1}{ k }=\frac{1}{ k _1}+\frac{1}{ k _2}+\frac{1}{2 k _8}$
- ✓$\frac{1}{ k }=\frac{1}{ k _1+ k _2}+\frac{1}{2 k _1}$
- C$k =\frac{ k _1 k _2}{ k _1+ k _2}+2 k _3$
- D$k = k _1+ k _2+2 k _3$
