question_answer

A parallel plate capacitor is made by stacking n equally spaced plates connected alternatively. If the capacitance between any two adjacent plates is C, then the resultant capacitance is [AIEEE 2005]

A) \[(n-1)C\]

B) \[(n+1)C\]

C) C

D) \[nC\]

Correct Answer: A

Solution :

[a] Each plate is taking part in the formation of two capacitors except the plates at the ends.

These capacitors are in parallel and n plates formcapacitors.

Thus, equivalent capacitance between A and B