Calculate the critical current for a wire of lead having a diameter of 1mm at 4.2 K. Calculate temperature for lead is 7.18 K and Hc = 6.5×10^4 A/m. Critical field is 42.758×10^3 A/m.

Calculate the critical current for a wire of lead having a diameter of 1mm at 4.2 K. Calculate temperature for lead is 7.18 K and Hc = 6.5×10^4 A/m. Critical field is 42.758×10^3 A/m.

(a) 3.5593 A

(b) 27.3 A

(c) 46.67 A

(d) 134.26 A

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The origin of the question is Hall Effect in section Semiconductors of Engineering Physics II

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Calculate the critical current for a wire of lead having a diameter of 1mm at 4.2 K. Calculate temperature for lead is 7.18 K and Hc = 6.5×10^4 A/m. Critical field is 42.758×10^3 A/m.

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