Magnetic Properties of Matter: Practice Problem & Solution

Solution Explained:

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

At the equator, magnetic field lines are perpendicular to incoming charged particles, causing maximum magnetic deflection force. At the poles, field lines are nearly parallel, causing little to no deflection. Thus, particles require much higher energy to penetrate at the equator.