Electromagnetic Induction: Practice Problem & Solution

Solution Explained:

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

When a current flows through an inductor, a magnetic field is established around and within the coil.
The work done in establishing this current is stored in the magnetic field as magnetic potential energy ($U = \frac{1}{2} L I^2$).
Therefore, an inductor stores energy in its magnetic field.