Parallel Plate Capacitor: Practice Problem & Solution

Solution Explained:

To solve this problem, we apply the core principles of Parallel Plate Capacitor. Understanding the underlying formula is key to arriving at the correct answer below:

In a charged capacitor, the electrostatic potential energy is stored in the electric field that exists between the plates of the capacitor. The energy density is given by \(u_E = \frac{1}{2}\epsilon_0 E^2\).