Rankers Physics

Magnetic Properties of Matter: Practice Problem & Solution

21. The magnetic susceptibility is negative for: (2016 - I)
Diamagnetic material only
Paramagnetic material only
Ferromagnetic material only
Paramagnetic and ferromagnetic materials

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:

Magnetic susceptibility $\chi$ is defined as $I/H$. Diamagnetic substances develop magnetization in a direction opposite to the applied magnetic field, so their magnetic susceptibility is negative.

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