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A general relationship for the current density carried by electrons of density n is J = qnv, where q is the electronic charge and v is the electron velocity due to drift and/or diffusion.
(a) Find the velocity of electrons, v(x), that are moving only by diffusion if they have a density distribution of n(x) = (n_o)exp(-x/f). The electric field is zero.
(b) What would be the electric field, f(x), that would lead to an electron drift velocity equal to that of the diffusion velocity in part (a)?
(c) At 300K, what value of f would make the field in part (b) to be 1000 V/cm?
Let f(a,b) = b' + a. (a) Derive the truth table for f. (b) What is the canonical sum-of-products expression for f? Do not use the shorthand notation. (c) Prove by Boolean algebra that the original expression is the same as the canonical SOP expres..
Suppose we want to construct an amplifier with a closed-loop gain of 50. We want the gain to vary by no more than +/- 5% while the open-loop gain varies by +/- 50%. Determine the values for a and b that will satisfy these constraints.
Current to Voltage Op Amp Circuit, A 12-bit DAC (Digital to Analogue Converter) gives an output range of 0 to 1 mA for a digital input word of 0 to 4095
Calculate the FLAT BAND POTENTIAL and the THRESHOLD VOLTAGE for a real n+ polysilicon / p- silicon MOS diode having Na= 1017 cm^-3 and oxide thickness d = 5 nm. Assume that the oxide has only fixed oxide charges (Qf)
Finite Difference Time Domain (FDTD) numerical method to develop for me a software program that simulates - evaluates Specific Absorption Rate (SAR) Distribution in a Human Head Near a Mobile Cellular Phone as a student project.
Make a sketch of the band diagram for an n-type semiconductor and a p-type semiconductor doped with phosphorus and boron at 5*10^15/cm^3 respectively. Label all the features of your drawing, as well as the relative energy
10.0-L ask contains 1.031 g O2 and 0.572 g CO2 at 18C. What are the partial pressures of oxygen and carbon dioxide. What is the total pressure. What is the mole fraction of oxygen in the mixture.
A constant(dc) current i(t)=3mA flows into a 50x10^(-6) capacitor. The voltage at t=0 is v(0)= -20V. The references for v(t) and i(t) have the passive configuration. 1. find the power at t=0 2. state whether the power flow into or out of the capaci..
A person with a receiver is 5 km away from the transmitter .What is the distance that this person must move further to detect a 3dB decrease in signal strength.
Find the input torque to the generator.If armature current and field current are kept constant, find the new value of the terminal voltage if the power factor is changed to 0.7 lagging.
Determine the phase relation between V o and i g for the given network if V g = 45sin(317t) and determine v o for the given network
Vary as square root-application, The frequency f of vibration of a wire varies directly as the square root of the tension T of the wire
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