If you know that the work function of tungsten is(4.5ev) , find: a- Emitter constant (b) for tungsten. b- The value of the constant A at a temperature of (27270 °C ) if you know that the density of the current passing through is (J=15 A/m?). If you know that the work function of tungstenis(4.5ev), find:a- Emitter constant (b) for tungsten.b- The value of the constant A at a temperature of(27270 °C ) if you know that the density of thecurrent passing through is (J=15 A/m2).

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If you know that the work function of tungsten is(4.5ev), find: a- Emitter constant (b) for tungsten. b- The value of the constant A at a temperature of (27270 °C ) if you know that the density of the current passing through is (J=15 A/m2).

If you know that the work function of tungsten is(4.5ev), find: a- Emitter constant (b) for tungsten. b- The value of the constant A at a temperature of (27270 °C ) if you know that the density of the current passing through is (J=15 A/m2).

Modern Physics

3rd Edition

ISBN:9781111794378

Author:Raymond A. Serway, Clement J. Moses, Curt A. Moyer

Publisher:Raymond A. Serway, Clement J. Moses, Curt A. Moyer

Chapter10: Statistical Physics

Section: Chapter Questions

Problem 8P

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If you know that the work function of tungsten is(4.5ev) , find: a- Emitter constant (b) for tungsten. b- The value of the constant A at a temperature of (27270 °C ) if you know that the density of the current passing through is (J=15 A/m?).

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