question_answer

Net capacitance between the point P and Q when A is the area of the plates and d is the distance between the plates -

A) \[\frac{3A{{\varepsilon }_{0}}}{2d}\]                

B) \[\frac{2A{{\varepsilon }_{0}}}{3d}\]

C) \[\frac{5A{{\varepsilon }_{0}}}{3d}\]                

D) \[\frac{3A{{\varepsilon }_{0}}}{5d}\]  

Correct Answer: C

Solution :

Use point potential method to draw equivalent circuit \[{{C}_{eq}}=5C/3=5/3\text{ }\left( {{\in }_{0}}A/d \right)\]