p versus T. The figure shows the behavior of the resistivity p of amaterial Z as a function of temperature T. If a constant electric fieldis maintained inside it, which of the following statements is/are TRUE P.about the metal?I. The current density in metal Z increases with increasing tempera--TToture.II. Its resistivity at T = T, is Po.III. Metal Z becomes a better conductor with increasing temperature.A. I onlyВ. П onlyC. I and IID. II and III

Resistivity of metal is defined as the resistance of a metal having unit cross section area and unit…

Answered: p versus T. The figure shows the…

Similar questions

Part A A 8.8×10-4 V/m electric field creates a 4.9x1017 electrons/s current in a 1.8-mm-diameter aluminum wire. What is the drift speed? Express your answer using two significant figures. "να ΑΣφ ? va = m/s Submit Request Answer Part B What is the mean time between collisions for electrons in this wire? Express your answer using two significant figures. T = Submit Request Answer
What is the electron drift speed in the 2.0-mm-diameter segment of the wire?
p2
A geological core sample is taken at a coal mine. The sample is a cylinder 20.7 feet long and 5.25 inches in diameter. The geologists run electric current through the sample to find its resistivity, which can be used to determine the quality of the coal. A voltage of 5030 V (5.03 × 103 V) is found to produce 11.4 mA of current through the sample. a. What is the resistance in the coal sample? b. What is the resistivity of the sample?
Question A2 Pure copper has a resistivity of 1.68 x 10-8 Nm. Some accurate cubes of copper are prepared, and electrical measurements are made, for which current is passed across a pair of opposite faces. a) Comparing a 2.5 cm cube and a 5 cm cube, which will have the higher conductance? Ex- plain your answer. b) Given eight 1 cm cubes, how can they be stacked to get the highest and the lowest resis- tance between opposite faces of the stack? Calculate the resistance of each stack.
A 1.0x10-3 V/m electric field creates a 3.0x1017 elec/s current in a 1.3-mm-diameter aluminum wire. Part A What is the drift speed? Express your answer with the appropriate units. O ΜΑ Vd=3.77 106 m S Submit Previous Answers Request Answer × Incorrect; Try Again; 27 attempts remaining Part B What is the mean time between collisions for electrons in this wire? Express your answer with the appropriate units. ΜΑ ? T = Value Units
Copper has a density of 8.96 x 10³ kg/m³ and a resistivity of 1.70 × 1080.m. A. On the basis of the classical free-electron gas model, assuming that each Cu atom contributes one electron to the electron gas, calculate the average time between collisions of the electrons. B. Calculate the mean free path from the mean free time and the electron's thermal velocity. C. How does the mean free path compare with the spacing between atoms in the lattice of Cu?
QUESTION 2 A cylindrical nickel wire of radius 2.0 mm and length 1.6 m has a potential difference of 12 volts applied between its ends. If the wire carries a resistive load of 4.0 Q, what is the drift velocity of the conduction electrons in the wire? Assume that the number density of conduction electrons in the wire is 9.12 x 1028 conduction electrons/m3. a. 0.0060 mm/s b. 0.036 mm/s C. 0.046 mm/s d. 0.016 mm/s e. 0.026 mm/s