After arriving at saturation current further increase in anode potential does not change in magnitude of current why?

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Solution

When the voltage is increased Upto a certain level, every electron that gets released is able to reach the other electrode.But as the number of electrons getting released is constant ,current too becomes constant. No further increase in voltage will cause changes in current.

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Statement I : On increasing the current in the circuit, the maximum speed with which electrons reach the anode does not change.

Statement II : The accelerating potential between the anode and the cathode is independent of the filament circuit.

Why don't we get maximum current (saturation current) at 0 potential

\frac{1}{n}

\frac{x}{m} = K (P)^{1 / n}

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