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For superconductors magnetic susceptibility χm Is

Question

For superconductors magnetic susceptibility χm Is

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Solution

For superconductors, the magnetic susceptibility (χm) is negative. This is because superconductors are perfect diamagnets, meaning they expel all magnetic fields due to the Meissner effect. The value of magnetic susceptibility for superconductors is -1. This negative susceptibility indicates that the magnetic field inside the superconductor is zero.

Here are the steps to understand this:

  1. Superconductors are materials that can conduct electricity with zero resistance. This happens below a certain critical temperature.

  2. One of the key properties of a superconductor is that it will expel all magnetic fields from its interior when it becomes superconducting, a phenomenon known as the Meissner effect.

  3. Magnetic susceptibility (χm) is a measure of how much a material will become magnetized in an applied magnetic field.

  4. For superconductors, χm is -1. This is because the superconductor expels all magnetic fields, i.e., it does not allow the magnetic field to penetrate its interior. This is a characteristic of perfect diamagnetism.

  5. Therefore, the negative magnetic susceptibility of a superconductor indicates that the magnetic field inside the superconductor is zero.

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