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Electrons and holes are moving in a uniform, one-dimensional electric field E = +2500 V/cm. The electrons and holes have mobilities of 700 and 250 cm2/V · s,respectively. What are the electron and hole velocities? If n =1017/cm3 and p =103/cm3, what are the electron and holecurrent densities?
An infinitely long wire is placed in a space with relative permeability of 9000 carrying current of 1.9 A in the +y direction. What is the magnitude of the magnetic flux density at (0.03,0,0) [meters] in units of Tesla
A series RLC circuit has elements with the following values: R=10Ω, L= .5H, and C=2μF. What is the resonant frequency of this circuit
a ladder 61 ft. long is leaning against the side of a house. the base of the ladder is sliding away from the house at a rate of 6 ft/sec. At what rate is the top of the ladder sliding down the house when the base of the ladder is 11 ft. from the h..
Find the density for germanium (Ge) semiconductor atoms give that its lattice constant a-5.66Å (Angstrom) and atomic weight is 72.59 g/mole.
Consider putting down a metal electrode with a 4.50 eV work function on a piece of Ge which has an electron affinity of 4.00 eV, an intrinsic carrier concentration at 300K of 2.5 x 1013/cm3, and that is doped with 1.0 x 1016 donors/cm3.
How much energy in Kilowatt hours is initially stored in the battery If the battery costs $75 and has a life 0f 300charge-discharge cycle, what is the cost of the energy in dollarsper kilowatt hour Neglect the cost of recharging the battery.
As far as a direct compaison of mechanical switches vs. transistors used as switches, the transistor does have a measurable impedance when ON, and a mechanical switch does not.
A point charge is placed at the origin of the spherical system of coordinates. a) Calculate the total energy stored in the space between R=a and R=b (b>a); b) What is the energy stored between R=b and R=5b
What voltage levels typically define a logic 0 and a logic 1 in the newer logics today. What are the major semiconductor technologies used in making integrated circuits today. What is the difference between sinking current and sourcing current.
A positive-sequence balanced three-phase wye-connected source witha phase voltage of 120 V rms supplies power to a balanced wye-connected load. The per phase load impedence is 40 + 10JΩ.
Any flip-flop type can be implemented from another type with suitable logic applied to the latter's inputs. Show how to implement a loadable D flip-flop starting with a T flip-flop.
A student from electromechanical systems class planned to construct a transformer that will cause an actual load resistance of 98.5 ohms to appear as 172.8 ohms to an AC voltage source of 176 V rms.
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