8:58 ADr IrfanYesterday, 8:16 AM858 42B/sASSIGNMENT 2PHY-4850⚫Q1. Write the equation for the totaldrift current density. Is the linearrelationship between drift currentdensity and electric field alwaysvalid? Why or why not.⚫Q2. Define electron and holemobility. What is the unit of mobility?⚫Q3. Explain the temperaturedependence of mobility. Why is thecarrier mobility a function of theionized impurity concentrations?Q4. Define conductivity. Defineresistivity. What are the units ofconductivity and resistivity?•5. Sketch the drift velocity ofelectrons in silicon versus electricfiled. Repeat for GaAs.⚫Q6. Write the equations for thediffusion currentdensities ofelectrons and holes.

Answer 1.total drift current density can be solved using this formulaJ = nqμEwhere: n is the charge…

Answered: 8:58 A Dr Irfan Yesterday, 8:16 AM 858…

College Physics

11th Edition

ISBN:9781305952300

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter1: Units, Trigonometry. And Vectors

Section: Chapter Questions

Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...

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Conduction electrons move to the right in a certain wire. What does this imply? Assume a conventional current. A. The current density and electric field both point left. B. The current density and electric field both point right. C. The current density points right, and the electric field points left. D. The current density points left, and the electric field points right. E. The current density points left, but the direction of the electric field is unknown.
a isothermal plasma is confined between the planes x=+-a in a magnetic field B=Bo Z. Jensity distribution is A) Derive an expression for the electron diamagnetic drift velocity vpe as a function of x. B) Draw a diagram showing the density profile and the direction of vDe on both sides of midplane if B is out of the paper. C) Evaluate vp, at x=a/2 if B=0.5T, KT,=10ev and a=7cm.
Equation1: Q(t)=CVcap(t) Equation 2: Qcharging(t)=CV(1−e^(−t/RC)) 1. Combine equations 1 and 2 to create an equation capable of finding the time-dependent voltage across a charging capacitor. Equation 3: I(t)≡(dQ(t))/(dt) 2. Combine equations 2 and 3 to create an equation capable of finding the time-dependent current across a charging capacitor.
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5. An electron orbiting an atomic nucleus forms its own kind of current loop. For a hydrogen atom in the lowest energy state, a single electron orbits the nucleus with a radius of 52.9 pm (5.29 × 10-11 nm) and a speed of about 2.2 x 106 m/s. X Z (a) Conventional current measures the amount of charge passing a certain point per unit time: I = In this case, Qis the electron charge, and At is the time it takes the electron to complete one full orbit. Using this information, what is the magnitude of the conventional current in the hydrogen atom? Answer: I = 1.05 mA. (b) What is the magnetic field (both magnitude and direction) at a distance of 5.29 nm along the axis of the atom, at the point indicated? Answer: -1.25 × 10-5 T 2
a 46 ll 54% O 12:06 D'bongs 1 minute ago 70 Chapter 2. Bectrotatics ray tube (ie,a conventional selevision picture tube). If a charge density p, is moving at velocity u, the convection current density is J-pu (2.77) Drill 2.23 A 4.00-mm-diameter columnar beam of electrons with charge density 0.200 Cim moves with velocity u -6.00 x 10 m/s. Determine the current, (Answer: 15.I nA) Conduction current density involves the movement of electrons through conductive media in response to an applied electric field. It is given by the point form of Ohn's lan, J-oE (2.78) Suppose che
We want to find how much charge is on theelectrons in a nickel coin. Follow this method.A nickel coin has a mass of about 5.5 g.Find the number of atoms in a nickel coin.Each mole (6.02 × 1023 atoms) has a mass ofabout 57.9 g.1. 4.89516 × 10222. 4.68685 × 10223. 4.5827 × 10224. 4.791 × 10225. 5.10346 × 10226. 4.47855 × 10227. 4.37439 × 10228. 5.62422 × 10229. 5.71848 × 102210. 5.79244 × 1022Answer in units of atoms. Part Two ( ALL PARTS CORRELATE TO EACHOTHER) Find the number of electrons in the coin. Eachnickel atom has 28 electrons/atom. 1. 1.42897 × 10242. 1.16651 × 10243. 1.45813 × 10244. 1.31232 × 10245. 1.60117 × 10246. 1.67981 × 10247. 1.73773 × 10248. 1.28316 × 10249. 1.34148 × 102410. 1.22483 × 1024Answer in units of electrons Part Three Find the magnitude of the charge of all theseelectrons. 1. 2.33619 × 1052. 2.10257 × 1053. 1.86895 × 1054. 1.9624 × 1055. 2.69135 × 1056. 2.56537 × 1057. 2.38291 × 1058. 2.28946 × 1059. 2.52308 × 10510. 2.42544 × 105Answer in units of C.

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