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Superconducting tin has a critical temperature of 3.7K at zero magnetic field and a critical field at 0.0306 Tesla at 0K. Find the critical field at 2K.

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Superconducting tin has a critical temperature of 3.7K at zero magnetic field and a critical field at 0.0306 Tesla at 0K. Find the critical field at 2K.

(a) 0.0306 Tesla

(b) 7.4 Tesla

(c) 0.02166 Tesla

(d) 0 Tesla

I have been asked this question by my college director while I was bunking the class.

My query is from Hall Effect topic in chapter Semiconductors of Engineering Physics II

1 Answer

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Right choice is (c) 0.02166 Tesla

The explanation: Critical field, Hc = H0 [1-T^2/(Tc)^2)]

Critical college = 0.02166 Tesla.

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