A rectangular cathode with the dimensions width = 2.6 mm and length = 30 mm glows at a temperature of 1800K in a vacuum tube. The work function of the cathode is = 2.5 eV and the emission constant is 3E4 . What is the maximum (saturation) current that can be extracted from this cathode?Hint: If you use the Boltzmann constant in eV enter at least 5 significant digits (i.e. use 8.6174E-5 )State the current in Amp units. Arectangular cathode with the dimensions width = 2.6 mm and length = 30 mm glows at a temperature of 1800K in a vacuum tube. The work function of the cathode is P = 2.5eV and the emission constant is 3E4 Am-K. What is the maximum (saturation) current that can be extracted from this cathode?Hint: If you use the Boltzmann constant in eV enter at least 5 significant digits (i.e. use 8.6174E-5 eV K-1)State the current in Amp units.Type your answer.

We have to find out current through rectangular cathode

Answered: A rectangular cathode with the…

Introductory Circuit Analysis (13th Edition)

13th Edition

ISBN:9780133923605

Author:Robert L. Boylestad

Publisher:Robert L. Boylestad

Chapter1: Introduction

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A rectangular cathode with the dimensions width = 2.6 mm and length = 30 mm glows at a temperature of 1800K in a vacuum tube. The work function of the cathode is = 2.5 eV and the emission constant is 3E4 . What is the maximum (saturation) current that can be extracted from this cathode?

Hint: If you use the Boltzmann constant in eV enter at least 5 significant digits (i.e. use 8.6174E-5 )

State the current in Amp units.

Arectangular cathode with the dimensions width = 2.6 mm and length = 30 mm glows at a temperature of 1800K in a vacuum tube. The work function of the cathode is P = 2.5
eV and the emission constant is 3E4 Am-K. What is the maximum (saturation) current that can be extracted from this cathode?
Hint: If you use the Boltzmann constant in eV enter at least 5 significant digits (i.e. use 8.6174E-5 eV K-1)
State the current in Amp units.
Type your answer.

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