SATHEE: Magnetics 6 Question 21

Magnetics 6 Question 21

21. In the graphs below, the resistance $R$ of a superconductor is shown as a function of its temperature $T$ for two different magnetic fields $B_{1}$ (solid line) and $B_{2}$ (dashed line). If $B_{2}$ is larger than $B_{1}$ , which of the following graphs shows the correct variation of $R$ with $T$ in these fields? (a)

(b)

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Solution:

If $B_{2} > B_{1}$ , critical temperature, (at which resistance of semiconductors abruptly becomes zero) in case 2 will be less than compared to case 1.

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Magnetics 6 Question 21

21. In the graphs below, the resistance R of a superconductor is shown as a function of its temperature T for two different magnetic fields B1 (solid line) and B2 (dashed line). If B2 is larger than B1, which of the following graphs shows the correct variation of R with T in these fields? (a)

Solution:

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