Make a rough estimate of the phase gradient associated with the flow of a 100 A current of superconducting electrons in a Nb3Ge multifilament wire with an effective diameter of 0.5 mm. Comment on the phase of the electrons in a copper wire of diameter 1 mm carrying a current of 1 A.

An 18-gauge copper wire with a diameter of 1-mm carries a constant current of 1-A. The charge concentration in the wire is 8.5 x 1028 per cubic meter. Determine the resistance, in ohms, of a 77-m wire in milli-ohm. Use resistivity equal to 1.72x10-8 ohm-m.

Figure Q4 shows the silicon wafer. This silicon has been added with the two elements as listed in Table Q3. Identify the majority charge carrier in each extrinsic silicon wafer and justify your answer with illustrations.

TRUE OR FALSE A. Diffusion of charge carriers in a p-n junction is dependent on the concentration gradient of majority charge carriers. B. The Schottky contact in a metal-semiconductor system occurs when the p-type semiconductor contacts a metal with a higher work function than it.

Calculate the equivalent resistances Rin of the following circuits. (The resistance value of the diodes in the conduction will be 0, the resistance value of the diodes in the insulation will be taken as infinity. R1=10ohm

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