Question

If metal section of shape H is inserted in between two parallel plates as shown in figure and A is the area of each plate then the equivalent capacitance is :

• A. $\frac{A{ϵ}_0}{a}-\frac{A{ϵ}_0}{b}$
• B. $\frac{A{ϵ}_0}{a+b}$
• C. $\frac{A{ϵ}_0}{a}+\frac{A{ϵ}_0}{b}$
• D. $\frac{A{ϵ}_0}{a-b}$

Answer 1

The correct option is D $\frac{A{ϵ}_0}{a-b}$

The net separation between the plates is $(a-b)$

$C=\frac{{\epsilon }_{0}A}{a-b}$