Show that the expression relating the drift current and the electric field in a semiconductor sample, via its conductivity, is equivalent to the classical form of Ohm's Law, V = RI

Q: When a wide forbidden band in a solid separates an empty upper energy band from a filled lower band,…

A: Given that there  a wide forbidden band in a solid separates an empty upper energy band from a…

Q: Discuss the electrical behavior of conductors, insulators and semiconductors in terms of energy band…

A: Energy band theory: Mainly, this theory gives by Bohr's "according to energy band theory each and…

Q: how does the band structure of a solid makes it an insulator, semiconductor or conductor?

A: Explanation: Conductor: The conductor is a material that contains free movable charges which conduct…

Q: Q 5. (a) What do you mean by intrinsic semiconductor? Briefly discuss the effect of temperature on…

A: Intrinsic semiconductor is the purest form of semiconductor

Q: When a forward bias is applied to a p-n junction, it(a) raises the potential barrier.(b) reduces the…

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Q: Assuming the practical model of the diode, what is the output waveform for the circuit shown below.

A: Diode will conduct when it is forward bias so a current flows through it Potential difference across…

Q: What semiconductor is frequently used for its high reliability at high speed? Explain why.

A: A semiconductor is an electronic device that is based on the electronic properties of semiconductor…

Q: In semiconductors the concept of nonequilibrium carriers distribution function provides a mean to…

A: We know that most of the the devices of interest are not in thermal equilibrium ,thus the ambient…

Q: If the ratio of mopility of electrons to mopility of holes is 3:1 and the condicutivity of impure…

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Q: How does the resistance of: i) a semiconductor ii) an alloy vary with temperature?

A: i) The resistance of semiconductor decreases with increase in the temperature. The resistance is…

Q: The difference in the variation of resistance with temeperature in a metal and a semiconductor…

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Q: Using the mathematical expression for the conductivity of a material, explain how it varies with…

A: Since, we know that conductivity (σ ) of a material is reciprocal of its resistivity (ρ)        i.e.…

Q: How does a semiconductor differ from a conductor or an insulator?

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Q: The longest wavelength of radiation absorbed by a certain semiconductor is 0.512 μm. Calculate the…

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Q: Consider four of semiconductor samples: solid A is orange, solid B is black, solid C is white, and…

A: Given:- Consider four of semiconductor samples: solid A is orange, solid B is black, solid C is…

Q: In a bridge rectifier, four diodes conduct during each half cycle of the input. true O False

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Q: Two basic transport mechanisms in a semiconductor crystal are:

A: Two kinds: 1. Diffusion current: Difference in concentration of charge carriers (concentration…

Q: Explain why at high temperature, an extrinsic semiconductor behaves like an intrinsic semiconductor.

A: A small amount of a suitable impurity is added to the pure semiconductor; the conductivity of the…

Q: For a certain semiconductor, the Fermi energy is in the middle of its band gap. If the temperature…

A: Probability that a state at the bottom of the conduction band is occupied is,…

Q: A semiconductor is struck by light of slowly increasing frequency and begins to conduct when the…

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Q: How does the bandgap differ in metals, semiconductors, and insulators?

A: The bandgap is the difference between the energies of the conduction band and valance band. The…

Q: An electron is confined within a thin layer of a semiconductor.If the layer can be treated as an…

A: The energy in the nth level is For n=1, For n=2,

Q: The transfer ratio B of a transistor is 50. The input resistance of the transistor when used in…

A: Calculate the peak base current of the transistor in common emitter configuration. Ib=VinRin=0.01 V1…

Q: determine the doubling temperature for list of semiconductor material shown in the table below.…

A: Step 1 Ans (a) Band energy gap of silicon at 273K Eg = Eg0 − βT  -----1) 1.11 = 1.21 − 3.6×10−4T T…

Q: Explain Ohm’s law and show it graphically. Does Ohm’s law hold for semiconductor and with varying…

A: From Ohm’s law: The above expressions clearly explain that the potential is directly proportional…

Q: There is no current generated in the valance band of semiconductors : O true false

A: It is false since at high temperature valance electrons moves and produce aome current

Q: For a certain semiconductor, the Fermi energy is in the middle of its band gap. If the temperature…

A: Given The temperature of semiconductor is T=285 K. The energy in the bandgap is Eg=0.005 eV. The…

Q: Q. Indium phosphate is a direct gap III-V semiconductor with a band gap of 1.35 eV at room…

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Q: What is the difference between N type and P type semiconductors in terms of composition?

A: Difference between N type and P type semiconductors in terms of their composition is as follows:…

Q: Distinguish between an intrinsic semiconductor and p-type semiconductor. Give reason, why, a p-type…

A: Intrinsic semiconductor : Intrinsic semiconductors are the pure form of semiconductors. Electrons…

Q: Why electric conductivity of intrinsic semiconductor is very bad?

A: Intrinsic semiconductor: Any semiconductor is in its pure form is known as the intrinsic…

Q: Show that in a parabolic potential well, the spacing between the energy levels is constant. In…

A: In the given question we have to Show that in a parabolic potential well, the spacing between the…

Q: For insulators, the band gap is relatively wide. FALSE TRUE

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Q: Assuming the practical model of the diode, what is the output waveform for the following circuit :

A: Diode will conduct when the diode is  in forward bias. When diode conduct potential across the diode…

Q: What is the band gap of the semiconductor, if it can only be excited by the light with wavelength…

A: Maximum wavelength for which electron get excited is, 500 nm = 500 x 10-9 m

Q: What is the difference between P-type and N- Type semiconductor?

A: P type semiconductor: 1. These are extrinsic semiconductors obtained by doping impurity atoms of…

Q: Compared to an insulator, the energy gap of a semiconductor is: A. full of holes B. about the same…

A: The difference of energy between the bottom of the conduction band and the top of the valence band…