Home Physics Moving Charge and Magnetism Mix Properties related to diamagnetism are given…
Physics Moving Charge and Magnetism Mix Single Correct MCQ
Published on: September 12, 2026

Properties related to diamagnetism are given below, select wrong statement.

A
Diamagnetic material does not have permanent magnetic moment.
B
Diamagnetism is explained in terms of electromagnetic induction.
C
Diamagnetic substances have small positive magnetic susceptibility.
D
Magnetic moments of different electrons cancel each other.

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Text Solution

Verified by Experts
The correct answer is:
C
Step 1: Understanding the nature of diamagnetic materials is crucial. Diamagnetic materials are characterized by having no permanent magnetic dipole moment. This is because all of their electrons are paired, resulting in canceling magnetic moments.
Step 2: Let's examine each statement:
  • Option A: True. Diamagnetic materials do not have a permanent magnetic moment because their electron spins are paired.
  • Option B: True. Diamagnetism is indeed explained by electromagnetic induction, as changes in the magnetic field induce a current that produces a magnetic field opposing the initial field.
  • Option C: False. Diamagnetic substances actually have small negative magnetic susceptibility, not positive. This property reflects their tendency to be repelled from magnetic fields.
  • Option D: True. In diamagnetic substances, the magnetic moments of paired electrons cancel each other out, resulting in no net magnetic moment.
Conclusion: The incorrect statement regarding diamagnetism is Option C, as it misrepresents the sign of magnetic susceptibility.

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