You maintain a constant electric field inside a piece of semiconductor while lowering the semiconductor’s temperature. What happens to the current density in the semiconductor? (i) It increases; (ii) it decreases; (iii) it remains the same.

Q: (a) Estimate the average drift speed of conduction electrons in a copper wire of cross-sectional…

A:

Q: Let's say you have a 20 cm long silicon wire, with a diameter of 4 cm. What current flows through…

A: Write the given values with suitable variables. L=20 cm=0.2 mr=4 cm2=0.02 mV=1000 Vρ=2300 Ω.m Here,…

Q: Calculate the average drift speed of electrons traveling through a copper wire with a cross-…

A: cross sectional area of wire,A = 90 mm2 = 9x10-5 m2current, I = 60 Aatomic mass of copper, M =…

Q: A temperature-stable resistor is made by connecting a resistor made of silicon in series with one…

A: The temperature coefficients of resistivity (resistance) of silicon and iron are given by:

Q: A temperature-stable resistor is made by connecting a resistor made of silicon in series with one…

A:

Q: (a) Copper Copper Nichrome In the circuit shown in the diagram, two thick wires connect a 1.6 volt…

A:

Q: Use the worked example above to help you solve this problem. The amount of charge that passes…

A:

Q: A copper wire of length L and cross-sectional area A carries a current I. If the current in the wire…

A: We are authorized to answer three subparts at a time, since you have not mentioned which part you…

Q: At what temperature will silver have a resistivity that is two times the resistivity of iron at room…

A: The resistivity of silver  is calculated as,         Rt = R0[1+α(T-T0)] Here,  Rt is the resistivity…

Q: 5 Q:- A current of (2 µA) passing through an intrinsic silicon bar has (3 mm) length and (50 × 100…

A: The current is given as, I=2 μA (or) I=2×10-6 A The length of the bar is given as, L=3 mm (or)…

Q: What is the resistance (in units of a) of a wire made of a material with a resistivity of 3.2 x 100.…

A: RESISTANCE

Q: A small but measurable current of 8.3 x 1010 A exists in a copper wire whose diameter is 2.9 mm. The…

A: Current (i) = 8.3×10-10 A diameter (d) = 2.9 mm Radius (R) = 1.45 mm = 0.00145 m n = 8.49×1028 m-3

Q: a rod of semiconducting meterial of length L = 3m and cross-sectioanal area A=2.5mm2 lies along the…

A: The resistance of the material is  R=ρLA…

Q: B) What is the current, in units.of.miliamperes in the rod?

A:

Q: A temperature-stable resistor is made by connecting a resistor made of silicon in series with one…

A:

Q: A current of 1.97 A flows through an annealed copper wire 2.25 m long and 1.47 mm in diameter. Find…

A: Current, I = 1.97 A Length, L = 2.25 m Diameter, d = 1.47 mm = 0.00147 m Conductivity, σ = 5.81×107…

Q: A copper wire of radius a=0.306 mm has an aluminum jacket of outer radius b-0.402 mm. There is a…

A:

Q: A conductor of gold with length L=10cm , and radius r=1 cm , carrying a current I = 2A , and the…

A: Given,  length L=10cm radius r=1 cm current I = 2A number of free electrons n=5*1028 elec/m3 .  ΔV =…

Q: 50- 30 10 Resistance(k) A thermistor is a type of resistor whose electrical resistance (in units of…

A: Temperature vs resistance curve for an thermoster is given.Here 3 questions are given and as per…

Q: Calculate the average drift speed of electrons traveling through a copper wire with a cross-…

A:

Q: Q4) Attempt to answer ONE branch only: a) If the electron concentration increase along the x-axis of…

A: We can use the formula, J=eDn(dn(x)/dx)

Q: In a small piece of semiconductor material, the concentration of electrons keeps decreasing from…

A: Part (1) It is given that the concentration of the electrons in the left end is greater than that in…

Q: Choose the correct alternative:(a) Alloys of metals usually have (greater/less) resistivity than…

A:

Q: An engineering intern is studying the effect of temperature on the resistance of a current carrying…

A:

Q: 11. Consider a wire with conduction electron density 5.9 x 1028 5. If the diameter of the wire is…

A:

Q: A current of 5 A exists in a copper wire of length 50 m and diameter of 2.5 mm when applying a…

A: Given information: Here, I is the current in the copper wire, l is the copper wire’s length, d is…

Q: A copper wire of length L and cross-sectional area A carries a current I. If the current in the wire…

A: According to guidelines we have to answer first three part of the question . GivenLength = L  Area =…

Q: A temperature-stable resistor is made by connecting a resistor made of silicon in series with one…

A:

Q: Answer the following questions: (a) A steady current flows in a metallic conductor of non-uniform…

A: (a) When a steady current flows in a metallic conductor of non-uniform cross-section, the current…

Q: A small but measurable current of 1.2 × 10-10 A exists in a copper wire whose diameter is 2.5 mm.…

A:

Q: A round copper wire of length 0.96 km and diameter 1.07 mm is found to have a resistance of 22 S2.…

A:

Q: C) What is the electric potential, in.units.of Volt, in the rod at zL/2? Answer

A: Current in the material will remain same.

Q: Calculate the drift velocity of electrons when a current of 1.5 A flows in a copper wire of…

A: Given data:  Current (I) = 1.5 A Cross-sectional area (A) = 5.0 mm2 = 5.0×10-6 m2 Electron density…

Q: How long does it take electrons to get from the car battery to the starting motor? Assume the…

A:

Q: Pure silicon crystal of length 1(0.1m) and area A(10 m²) has the mobility of electrons (₂) and holes…

A:

Q: For how long time period should a flow of 10^19 electrons be maintained between two points A and B…

A: Number of electrons (n) = 1019  Charge per electron (e) = 1.6 x 10-19  C

Q: 5) The resistivity of a certain material is 0.02 22.m whilst the Hall coefficient is 5x10-4m³/C.…

A:

Q: rod of semiconducting material of length L- 2 m and cross-sectional area A- 4.5 mm? lies along the…

A: