QUESTION What happens to the drift speed of the electrons as the temperature rises? (Select all thatapply.)It remains the same.It becomes smaller because the atoms of the metal vibrate more strongly and interfere more withelectron drift motion.It becomes larger because the electrons become more energetic and move faster.It becomes larger, so that the resistance decreases and current increases.It becomes smaller, so that the resistance increases and current decreases.Apply the equation below for the temperature dependence of the resistivity. Consider what the change inresistivity implies about the resistance, and what effect that has on current, and therefore on drift speed.Review the textbook explanation of how the resistivity depends on temperature.P = Po[1 + a(T- To)]PRACTICE ITUse the worked example above to help you solve this problem. A resistance thermometer, whichmeasures temperature by measuring the change in resistance of a conductor, is made of platinum and hasa resistance of 50.0 2 at 20.0°C.(a) When the device is immersed in a vessel containing melting indium, its resistance increases to76.8 . From this information, find the melting point of indium.157.14°C(b) The indium is heated further until reaches a temperature of 217°C. What is the ratio of thenew current in the platinum to the current Imp at the melting point?0.565XYour response differs from the correct answer by more than 10%. Double check your calculations.HINTS: GETTING STARTED | I'M STUCK!Suppose a wire made from an unknown alloy and having a temperature of 20.0°C carries a current of0.503 A. At 52.8°C the current is 0.352 A for the same potential difference. Find the temperaturecoefficient of resistivity of the alloy.α = 0.00392EXERCISE

We need to find out the change in drift speed when temperature is increased.Review the…

QUESTION What happens to the drift speed of the electrons as the temperature rises? (Select all that apply.) It remains the same. It becomes smaller because the atoms of the metal vibrate more strongly and interfere more with electron drift motion. It becomes larger because the electrons become more energetic and move faster. It becomes larger, so that the resistance decreases and current increases. It becomes smaller, so that the resistance increases and current decreases.

QUESTION What happens to the drift speed of the electrons as the temperature rises? (Select all that apply.) It remains the same. It becomes smaller because the atoms of the metal vibrate more strongly and interfere more with electron drift motion. It becomes larger because the electrons become more energetic and move faster. It becomes larger, so that the resistance decreases and current increases. It becomes smaller, so that the resistance increases and current decreases.

Glencoe Physics: Principles and Problems, Student Edition

1st Edition

ISBN:9780078807213

Author:Paul W. Zitzewitz

Publisher:Paul W. Zitzewitz

Chapter29: Solid-state Electronics

Section29.1: Conduction In Solids

Problem 11PP

See similar textbooks

Similar questions

A transistor with a height of 0.4 cm and a diameter of 0.6 cm is mounted on a circuit board as shown in Figure 5. The transistor is cooled by air flowing over it with an average heat transfer coefficient of 30 W/m?.K. If the air temperature is 55°C and the transistor case temperature is not to exceed 70°C, determine the amount of power this transistor can dissipate safely. Disregard any heat transfer from the transistor base. Air 55°C Power transistor O.6 cm TS70°C 0.4 cm Figure 5
What does the effective conductivity of an enclosure represent? How is the ratio of the effective conductivity to thermal conductivity related to the Nusselt number?
The barium-yttrium ceramic compound used to demonstrate superconductivity will work only if supercooled to a temperature of 125 K. What is the equivalent temperature a) in °C? b) in °F?
A copper wire 100m long with cross-sectional area of 2x10 -4 cm 2 isheated from room temperature of 25 0 C to 200 0 C. Findc) The drift speed of the “electron group” in the wire, if the current is 3A and density of electrons is 8.5x10 28 electrons /m3d) The voltage drop across the wire resistor for this current of 3A
Please answer and explain to these in not less than 3 sentences. Thank you! 1. How can a sheet of copper be made to emit electrons thermionically? 2. Why do electrons cross the gap in a vacuum tube? 3. Besides tungsten, what other materials are used for cathodes in vacuum tubes? 4. What is the advantage of directly heated cathodes?
Question 13 The density of states g(E) depends on the number of degrees of freedom for electron motion. True False Question 14 Consider the Maxwell-Boltzmann approximation to the Fermi-Dirac distribution f(E). Which of the following statements is false? electrons and holes satisfy the law of mass action the electron concentration isno = n¡ exp ((EF – Efi)/kBT) O diffusion coefficient and mobility satisfy D/u kBTle the mean electron kinetic energy is kBT O the hole concentration is Po = n¡ exp ((Ef – EFi)/kBT) Question 15 Charge neutrality applies only to intrinsic semiconductors, Extrinsic semiconductors have extra charge due to ionized impurity atoms. True False Question 16 A Si atom acts as a donor impurity atom in an AlIAs crystal. Considering atomic valence: the Si atom is a substitutional impurity on a As atomic site in AIAS O the Si atom is a substitutional impurity on a Al atomic site in AIAS
This is an exam, I don't want the solution in detail, I just want the correct answer as soon as possiblesteel structure
how thermal radiation does occur in nanofluids?
Assume a string of 36 PV cells in a module exposed to sunlight as shown in the figure. Each PV cell has a current and voltage output of 2A and 0.5V respectively. Cell 36 is partially shaded due to a leaf, which causes the current of this cell to drop to 0.5A. What will be the output current of this string (in A)? Which cell(s) will dissipate the highest amount of heat? Assume that by-pass diodes are installed across every 3 cells of the string. What will the current through the string now (in A)?
: A uniform piece of n-type of silicon that is lum long senses a voltage of 1 v. Determine the velocity of the electrons. Use p1350 cm/V.ses
Problem 1: Thermodynamics of neutral Fermi liquid: a) Write the free energy of quasi-particles in the theory of Fermi liquid. Discuss the difference of quasi-particles free energy and the free energy of non-interacting Fermi gas. b) What are the characteristic energy scales in the theory of Fermi liquid? c) What is the difference in the specific heat of quasi-particles in the theory of Fermi liquids and the specific heat of non-interacting Fermi gas. Plot the specific heat vs. temperature for both systems.
Calculate the amount of time it would require for 1eV of energy to be absorbed by an atom in a metal located 1m away from a 60-W bulb. Take the area of the atom to be (1x10^-20)m2