A Geiger counter is a device used to detect radiation, and consists of a thin metal wire (anode) at the center of a metallic tube (cathode). As radiation enters the tube, electrons are knocked off from the gas inside the tube or from the metallic wall, and accelerate towards the wire at the center. Consider a Geiger counter with an evacuated tube (a vacuum existing between cathode and anode), where the inner anode has a radius 2 mm and the outer cathode has a radius of 44 mm. The anode has a linear charge density of +10 nC/m, while the cathode has a charge per unit length of -10 nC/m. Let the cathode potential be equal to zero (using it as voltage reference). What is the potential at a distance of 73 mm from the center? Express your answer up to four significant figures. Note that this item is synced with the next item and that you can assume that the length of the Geiger counter is much larger than the radius of the cathode. Anode Cathode

A Geiger counter is a device used to detect radiation, and consists of a thin metal wire (anode) at the center of a metallic tube (cathode). As radiation enters the tube, electrons are knocked off from the gas inside the tube or from the metallic wall, and accelerate towards the wire at the center. Consider a Geiger counter with an evacuated tube (a vacuum existing between cathode and anode), where the inner anode has a radius 2 mm and the outer cathode has a radius of 44 mm. The anode has a linear charge density of +10 nC/m, while the cathode has a charge per unit length of -10 nC/m. Let the cathode potential be equal to zero (using it as voltage reference). What is the potential at a distance of 73 mm from the center? Express your answer up to four significant figures. Note that this item is synced with the next item and that you can assume that the length of the Geiger counter is much larger than the radius of the cathode. Anode Cathode

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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Concept explainers

Wien's displacement law

Students often get confused between Wien's displacement law and Planck's radiation law. Although both are historically related, yet they are conceptually different. Planck's law helps determine the spectrum of a blackbody, while Wien's law determines the relationship between peak wavelength and temperature.

Question

A Geiger counter is a device used to detect radiation, and consists of a thin metal wire
(anode) at the center of a metallic tube (cathode). As radiation enters the tube, electrons
are knocked off from the gas inside the tube or from the metallic wall, and accelerate
towards the wire at the center. Consider a Geiger counter with an evacuated tube (a
vacuum existing between cathode and anode), where the inner anode has a radius 2 mm
and the outer cathode has a radius of 44 mm. The anode has a linear charge density of
+10 nC/m, while the cathode has a charge per unit length of -10 nC/m. Let the cathode
potential be equal to zero (using it as voltage reference).
What is the potential at a distance of 73 mm from the center? Express your answer up to four
significant figures. Note that this item is synced with the next item and that you can assume that the
length of the Geiger counter is much larger than the radius of the cathode.
Anode
Cathode

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