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.

College Physics

11th Edition

ISBN:9781305952300

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter1: Units, Trigonometry. And Vectors

Section: Chapter Questions

Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...

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