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Resistivity

If the load r...

Question

If the load resistance decreases in a zener regulator, the zener current

Decreases

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Stays the same

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Increases

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Equals the source voltage divided by the series resistance

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Solution

The correct option is C Increases
The load current is given by $I_{L} = \frac{V_{z}}{R_{L}}$ and the zener current is given by $I_{z} = I_{s} - I_{L}$ . Thus, if the load resistance decreases, load current increases. This in turn will reduce the zener current

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