show that according to free electron model of electrical conduction in metals and classical physics  , the resistivity of metals should be proportional to underoot T ,where T is temperature in kelvin.

Q: A negligibly small current is passed through a wire of length 15 m and uniform crosssection 6.0 x…

A: Given that - length of the wire Cross sectional area Resistance To Find - We have to calculate the…

Q: Now we substitute this expression for AQ = IAt. The current density %3D J=nqvd. If there is more…

A: We consider a short cylinder with an axis parallel to the drift velocity and it has a…

Q: A cepper wee has asular ermm sectian wth a radius of 4.60 mm (0 the wire aties a rent of 360 A, find…

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Q: During the 3.7 min a 6.0 A current is set up in a wire, how many (a) coulombs and (b) electrons pass…

A: (a) The amount of coulomb that passes through any cross section of the wire’s width is given by…

Q: The vañation conducter wilh femperature 6°c is ofresistance R ohms an aluminium gon gwen by is tHe…

A: Let R is the resistance of the conductor, θ be the temperature and αis the temperature coefficient…

Q: Germanium doped with 1024 m Al atoms is a semi-conductor at room temperature and each Al atom…

A: Electrical Conductivity of this material        = 2.4 × 104 per ohm per meter

Q: Calculate the space width in (meter) and the capacitance in (Farad) for a p-n junction when a…

A: Applied reverse biase voltage Vr=3 VTemperature T=350KNA=1020 m-3ND=1018 m-3ni=1015…

Q: A negligibly small current is passed through a wire of length 15 m and uniform cross-section 6.0 ×…

A: Given:  Length of the wire, L = 15 m  Area of crossection of the wire, A = 6 x 10-7 m2 Resistance of…

Q: In the Specific Charge of Copper experiment, if the measured value of the current is always greater…

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Q: Show that the expression relating the drift current and the electric field in a semiconductor…

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Q: Consider a copper wire that is carrying, say, a few amperes of current. Is the drift speed vd of the…

A: The drift velocity is the average velocity that a particle, such as an electron, attains in a…

Q: )An tdial section has an flows through the 2.0v in the Sole the current fo

A: Here, we have to calculate the rate of change of current.

Q: Calculate the reflection coefficient to be R and the penetration factor T for the voltage barrier…

A: Given: V(x)=0 if x<0 Region1Vo if x>0 Region 2 When E>Vo

Q: Hall coefficient of a specimen of depend silicon found to be 3.66×10¬m³/C. The resistivity of the…

A: A semiconductor material is a type of material that exhibits a property of a conductor that conducts…

Q: write the energy band diagram df P- ty pe and N-lype f Seml conductor.

A: In p-type semiconductor, the density of holes is greater than the density of electrons while in…

Q: In the Specific Charge of Copper experiment, if the measured value of the current is always smaller…

A: Specific charge of copper = It/Δm Given: measured value of current is always less than true value.

Q: What is the probability of an electron being thermally promoted to the conduction band in silicon…

A: Given Data : The value of Eg for silicon is given as Eg = 1.07 eV. The room temperature is given as…

Q: a=2m radius wire +2 towords LA current uwith a constot Js= errent density of (A/m²) b= 3m, cylind…

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Q: R which is carrying a uniformly distributed total current of /in z-direction.

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Q: The probability of filling the band by• electrons 0.5 regardless to * temperature T, if E>Ef O E<Ef…

A: We have to select the most appropriate option for the case, where it is asked that what will be the…

Q: (ix) To saturate a BJT, (a) Ig = Ictuat) (b) Iy > Ic(pav/Boc (c) Vcc must at least 10 V (d) the…

A: In the given question, We have to discuss about base current and saturated collector current in BJT.

Q: Figure 1. illustrates a parallel-plate capacitor of radius 3 cm, made of lossy dielectric material…

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Q: The total number of free electrons is more, the conductivity of the material will be more. Select…

A: We know the expression for charge is  q= nen = number of electrons e = charge on electron

Q: What is the magnitude of the electrostatic force between a singly charged sodium ion (Na+, of charge…

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Q: A conductive wire has a conductivity of (0.649 × 10^-8) at room temperature are (5.8 x 1028)…

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Q: How do high- Tc superconductors become resistanceless at such high temperatures?

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Q: Find τ, μ for copper, given that p = 1.55 × 10 1e-8 n-m and the number of electrons for copper n =…

A: Given-  ρ = 1.55 × 10-8 Ω-mn = 2.54 ×1027 electron / m3

Q: During the 4.0 min a 5.0 A current is set up in a wire, how many (a) coulombs and (b) electrons pass…

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Q: Find the current flowing through a copper wire of length 20cm, area of cross section M?, when…

A: Given Data: The length of the copper wire is: l=20 cm=0.2 m The cross-sectional area of the wire is:…

Q: determine the drift velocity, in mm/s, of the free electron constituting the current.

A: Given: Resistivity of resistor, ρ=3.83×10-8Ωm Electric field, E=18V/m Electron per volume is,…

Q: Determine the charge entering the element fro t = 0 to t = 2s if the current flowing through the…

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Q: The total current crossing a cylinder surface bounded by: D-lm The currnet crossing a sheet z-5m. If…

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Q: Discuss the current conduction in n-type and p-type conductors.

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

Q: For a circuit made with an iron-constantan thermocouple and a difference op amp with a gain of 1000,…

A: The expression for output voltage is,

Q: The relaxation time τ is nearly independent of applied E field whereas it changes significantly with…

A: Relaxation time is the time interval between two successive collisions of the electrons.

Q: Why should elements and compounds with positive paramagnetic susceptibilities not be good candidates…

A: Paramagnetic materials: These materials are categorised as those which are weekly attracted to the…

Q: Since the Fermi energy level of zinc is EF = 9.47 eV, what is the number of electrons per unit…

A: Given data The Fermi energy level of zinc is EF = 9.47 eV = 9.47 x 1.6 x 10-19 J = 15.152 x 10-19 J…

Q: A Piezoelectric material with d = 250×10“MV¯† and e,=1000 is in the form of a cylinder of length and…

A: Given: d = 250×109 V-1 Length = 10 mm Diameter = 3 mm Breakdown voltage = 3.5 kV

Q: At what pressure, in atmospheres, would the number of molecules per unit volume in an ideal gas be…

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Q: conductance of the same wire

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Q: Show the current flow, assuming electron flow.

A: The direction of current can be identified by the right hand thumb rule. Where thumb indicates the…

Q: What fraction of the electrons in a good conductor have energies between 0.90 EF and EF at T = 0?

A: Given data: The initial energy level is, Ei= 0.90EF The final energy level is, Ef= EF The…

Q: are and contrast the temperature dependence of the electrical conductivities of a intrinsic (e.g.,…

A: A semiconductor is a material whose electrical conductivity falls between that of a conductor and an…

Q: In a solid, consider the energy level lying 0.4eV below Fermi level.What is Probability of this…

A: The equation for the probability the energy level to be filled is given by fE=11+e-Ef-EkT Here, EF…

Q: If a current of 80.0 mA exists in a metal wire, how manyelectrons flow past a given cross section of…

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