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...

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

Extracted text: 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?).

Jun 11, 2022
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