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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?
Given R = 50Kohm and C = 100nF what is the frequency of oscillation Given a required frequency of oscillation of f = 10kHz and R = 8kohm, what should the value of C be
The current flowing through a 300-mH inductance is given by 5e(-200t). Find expressions for the voltage, power, and stored energy. Sketch the waveforms to scale for 0
In a RLC circuit, the generator voltage varies in time, where the amplitude of e max= 1.2 volt and emf freq.= 0.5 Hz , which the max current is equal to the max current when the freq. of emf = 3.0 Hz, which is .00033 A.
Restricting yourself to nondegenerate dopings and also requiring the resistance to be readily measured with a hand-held multimeter (say 1 R 1000), what is the range of doping Pick a doping concentration in the mid range.
Assume that the size of each track is the same. Compute the size of each cylinder on the disk both in terms of the number of bytes and the number of blocks. Also, compute the size of each track.
Discretization - How does the size of the differential charge elements influence your results Find E at the point (0, a/2, a), for this study. Devise a good way to represent your data to demonstrate the influence of discretization.
Problem 1: It is desired that an Arduino along with an EduShield be used to control 6 camerassimultaneously. Each is made by a dierent company: a Canon, a Nikon, an Olympus, a Pentax,a Sony, and a Minolta.
If the telephone instrument has a resistance of 200 ohms when off hook and represents an open circuit when on hook calculate the combined resistance of the local loop and the power source at the central office.
1. Determine the peak-to-peak current ripple in the output inductor for a forward converter and determine the output voltage ripple of the converter. We know the following parameters: duty cycle d, input voltage Vin, turn ratio.
Consider LTI system S with impulse response h(t) = u(t) - u(t-2). A) Let x1(t) = d/dt(u(t) - u(t-2)). What is the output of the system B) Let x2(t) = cos(pi*t). What is the output of the system
Flip-flops must be in what mode (Set, Reset, Hold, or Toggle) in order to divide a clock's frequency when building a counter What is the advantage of a synchronous counter as compared to a ripple counter
Implementation of the project with the analog and digital modulation techniques
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