Question

Which law states that magnetic susceptibility is inversely proportional to absolute temperature?

• A. Faraday’s Law
• B. Curie’s Law
• C. Lenz’s Law
• D. Gauss’s Law

Hint:

Curie’s Law for paramagnetic materials: \[ \chi = \frac{C}{T} \] As temperature increases, magnetic susceptibility decreases.

Answer 1

The Correct Option is B

Concept: Magnetic susceptibility (\(\chi\)) measures how easily a material can be magnetized in the presence of an external magnetic field. For paramagnetic materials, susceptibility depends on temperature. This relationship is described by Curie’s Law. According to Curie’s Law: \[ \chi = \frac{C}{T} \] where
• \(\chi\) = Magnetic susceptibility
• \(C\) = Curie constant
• \(T\) = Absolute temperature This equation shows that susceptibility is inversely proportional to absolute temperature.

Step 1: State the relation between susceptibility and temperature. \[ \chi \propto \frac{1}{T} \]

Step 2: Identify the law describing this relation. The law that states this inverse proportionality is called \[ \boxed{\text{Curie’s Law}} \]