See both images attached a) Draw the energy band diagram for the device. Include Ec, Ev, E; and a carefully positioned EF on yourdiagram. Also indicate how you arrived at your answer.b) What is the electrostatic potential drop across the device; i.e., what is V(x=x)-V(x=0)? 2. A Si device is maintained under equilibrium conditions at T-300K. Given the electric field inside the deviceas is pictured next, N₁ = 10%/cm³ for 0

Answered: a) Draw the energy band diagram for the…

Electricity for Refrigeration, Heating, and Air Conditioning (MindTap Course List)

10th Edition

ISBN:9781337399128

Author:Russell E. Smith

Publisher:Russell E. Smith

Chapter2: Basic Electricity

Section: Chapter Questions

Problem 20RQ: What is a proton? Where does it normally exist in an atom, and what is its charge?

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P1.15. A copper wire has a diameter of 2.05 mm and carries a current of 15 A due solely to clectrons. (These values are common in residential wiring.) Each electron has a charge of -1.60 × 10-19 C. Assume that the free-electron (these are the electrons capable of moving through the copper) concentration in copper is 1029 electrons/m'. Find the average velocity of the electrons in the wire.
c. [Pl-1.b] Calculate the probability of having an electron occupying an energy state that is 0.7 eV above the electrochemical potential at 300 °K.
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Which statement(s) is(are) true for photomultiplier tubes?I Photomultiplier tubes are very sensitive detectors, amplifying the photoelectron current by approximately 1 million.II Emitted photoelectrons are accelerated toward positively charged electrodes called dynodes.III Electrons strike the dynode with a kinetic energy less than the original emitted kinetic energy.IV For each electron striking a dynode, more than one electron is knocked free. The additional electrons are accelerated toward the next dynode in the detector where amplification is repeated. Select one: a. II, III, and IV b. II c. I, II, and IV d. II and III e. I and IV
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A 1.5 V battery is added to the photoelectric effect apparatus as shown below. Monochromatic light source Evacuated tube + 1.5 V B Make a sketch of the above circuit and label electrodes A and B according to the type of charge (+ or -) that accumulates (whether the light is on or off). When the light is turned on consider the following questions: • Is the number of electrons emitted from electrode Beach second when there is a battery in the circuit greater than, less than. or equal to the number emitted each second when there is no battery? Explain. • What is the potential difference across the electrodes (AV = VA - VB)? • What does your answer to the above question imply about whether the net charge on each of the electrodes changes? Explain. • Write an expression relating the potential difference AV to the change in kinetic energy of a single electron as it moves from electrode B to electrode A. (Hint: Consider the work done by the electric field between the electrodes or the…
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