**Category:** Electromagnetism  
**Subtype:** Faraday's Law of Electromagnetic Induction  
**Problem Description:** This problem involves calculating the induced electromotive force (emf) in a coil as the magnetic flux through it changes over time. Specifically, it requires finding the magnitude of the induced emf when the magnetic flux decreases from \(1.2 \, \text{Wb}\) to \(0.6 \, \text{Wb}\) over a period of 1 minute.