Question

A battery of constant voltage is available. How to adjust a system of three identical capacitors to get high electrostatic energy with the given battery?

• A. Three in parallel
• B. Whatever may be combination, it will always have same electrostatic energy
• C. Two parallel and one in series
• D. Three in series

Answer 1

Answer: (A)

Three in parallel

Electrostatic energy of the capacitor is given by $\frac{1}{2}C{V}^2$.
Now, if three capacitors are in parallel combination, there equivalent capacitance will be maximum. So electrostatic energy of the capacitor will be maximum.