In a diode,when there is a saturation current | vedclass

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(D) Key Idea: At saturation,the change in current is zero.We know that the plate resistance $r_p$ is defined as the ratio of the change in plate volta

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infinite quantity

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(D) Key Idea: At saturation,the change in current is zero.We know that the plate resistance $r_p$ is defined as the ratio of the change in plate voltage $\delta V$ to the change in plate current $\delta I$:$r_p = \frac{\delta V}{\delta I}$At the saturation point,the current remains constant regardless of the increase in voltage,meaning the change in current $\delta I = 0$.Therefore,the plate resistance becomes:$r_p = \frac{\delta V}{0} = \infty$Hence,the plate resistance is infinite.

In a diode,when there is a saturation current,the plate resistance will be

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