Question:
An example of a perfect diamagnet is a superconductor. This implies that when a superconductor is put in a magnetic field of intensity B, the magnetic field \(B_s\) inside the superconductor will be such that :
An example of a perfect diamagnet is a superconductor. This implies that when a superconductor is put in a magnetic field of intensity B, the magnetic field \(B_s\) inside the superconductor will be such that :
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A perfect diamagnet has susceptibility -1, so it completely expels the field (Meissner effect).
Updated On: Nov 11, 2026
- \(B_s = -B\)
- \(B_s = 0\)
- \(B_s = B\)
- \(B_s \lt B\) but \(B_s \neq 0\)
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The Correct Option is B
Solution and Explanation
For a magnetic material \(B_s = \mu_0 H(1+\chi)\).
A perfect diamagnet has \(\chi = -1\), hence \(B_s = 0\) (Meissner effect: all field lines are expelled).
Answer: (2) \(B_s = 0\)
A perfect diamagnet has \(\chi = -1\), hence \(B_s = 0\) (Meissner effect: all field lines are expelled).
Answer: (2) \(B_s = 0\)
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