MCQ
Two charged capacitors have their outer plates fixed and inner plates connected by a spring of force constant ' $k$ '. The charge on each capacitor is q. Find the extension in the spring at equilibrium
- ✓$\frac{q^2}{2 A \varepsilon_0 k}$
- B$\frac{q^2}{4 A \varepsilon_0 k}$
- C$\frac{q^2}{A \varepsilon_0 k}$
- D$0$
