Problem 04 | Chapter 45 | HC VERMA | IIT JEE | Semiconductors and Semiconductor Devices
Problem 04
The band gap for silicon is ?.? ??. (a) Find the ratio of the band gap to ?? for silicon at room temperature ??? ?. (b) At what temperature does this ratio become one tenth of the value at ??? ? ? (Silicon will not retain its structure at these high temperatures.)
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Problem 3.43 IE IRODOV
Two coaxial rings, each of radius ?, made of thin wire are separated by a small distance ?(?≪?) and carry a charge ? and –?. Find the electric field potential and strength at the axis of the system as a function of ? coordinate. Show in the same drawing approximate plots of the functions obtained. Investigate these functions at |?|≫?.
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Problem 5.23 |Magnetostatics |Griffith |3rd ed.
Problem 5.23
What current density would produce the vector potential, ?=?? ̂(where k is a constant), in cylindrical coordinates?
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