Question

A parallel plate capacitor is made by stacking 'n' equally spaced plates connected alternatively. If the capacitance b/w any two adjacent plates is 'C', then the resulatant capacitance is :

a) (n-1)C.

b) (n+1)C.

c) C.

d) nC.

Answer 1

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 form (n -1) capacitors.Thus, equivalent capacitance between A and B = (n -1) C