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The work function of a thermionic emitte...

The work function of a thermionic emitter is `4.5 eV`. By what factor does the thermionic current increase if its temperature is raised from `1500 K to 2000 K`?

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To find the factor by which the thermionic current increases when the temperature is raised from 1500 K to 2000 K, we can follow these steps: ### Step 1: Write the formula for thermionic current The thermionic current \( I \) is given by the formula: \[ I = A s T^2 e^{-\frac{\phi}{kT}} \] where: ...
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