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Introductory Circuit Analysis (13th Edition)
13th Edition
ISBN:9780133923605
Author:Robert L. Boylestad
Publisher:Robert L. Boylestad
Chapter1: Introduction
Section: Chapter Questions
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15) In an experiment, It is observed that a strong spark occurs between anode and cathode when a
ww
voltage is applied to the anode while the cathode is grounded. Consider a gas in a closed container is
located between the electrodes. If Townsend's first ionization coefficient fort he gas is 2
electrons/cm and the gap spacing is 56 mm, which of the following statement(s) is/are true about
Townsend's second ionization coefficient?
www wwwm
1. In this experiment, Townsend's second ionization coefficient can be ignored.
2. Townsen's second ionization coefficient of this gas can be 0.02
3. The measured current between anode and cathode is self-sustained
4. The gas acts like an insulator in this experiment
5. Townsend's second ionizațion coefficient of this gas can be 0.002
ww w w
wwwa
a. 3,4,5
b. 1,2,5
с. 1,2,4
d. 2,3,5
e. Only 4
Transcribed Image Text:15) In an experiment, It is observed that a strong spark occurs between anode and cathode when a ww voltage is applied to the anode while the cathode is grounded. Consider a gas in a closed container is located between the electrodes. If Townsend's first ionization coefficient fort he gas is 2 electrons/cm and the gap spacing is 56 mm, which of the following statement(s) is/are true about Townsend's second ionization coefficient? www wwwm 1. In this experiment, Townsend's second ionization coefficient can be ignored. 2. Townsen's second ionization coefficient of this gas can be 0.02 3. The measured current between anode and cathode is self-sustained 4. The gas acts like an insulator in this experiment 5. Townsend's second ionizațion coefficient of this gas can be 0.002 ww w w wwwa a. 3,4,5 b. 1,2,5 с. 1,2,4 d. 2,3,5 e. Only 4
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