Question

A parallel plate capacitor is made by placing is made by placing n equally spaced plates connected alternatively. If the capacitance between any two adjacent plates is C then the resultant capacitance is.

• A. nC
• B. $\frac{C}{n}$
• C. $(n + 1)C$
• D. $(n - 1)C$

Answer 1

Answer: (D)

$(n - 1)C$

Answer 2

: When n equally spaced plates are connected alternatively, (n -1) capacitors, each of capacity C are formed. As they are joined in parallel,

$\therefore C_{eq} = (n - 1)C$