Practicing Success

Target Exam

CUET

Subject

Physics

Chapter

Magnetism and Matter

Question:

Read the passage and answer the question.

The magnetic susceptibility of a substance is defined as the measure of how readily it responds to an external magnetic field. It gives the measure of a substance's aptness to acquire magnetism. It has no units. Mathematically, it is defined as the ratio of the intensity of magnetization to the magnetic intensity. The susceptibility of a substance is given as (2.7 x 10-5). 

What is the intensity of magnetization if the magnetic intensity is 2 x 103 A m-1 ?

Options:

0.54 x 10-2  A m-1

1 x 10-2  A m-1

5.4 x 10-2  A m-1

5.4 x 10-5  A m-1

Correct Answer:

5.4 x 10-2  A m-1

Explanation:

X = M/H

M = XH

X = 2.7 x 10-5 ; H = 2 x 103 A m-1

M = 5.4 x 10-2  A m-1