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A zener diode is to be used as a voltage...

A zener diode is to be used as a voltage regulator. Identify the correct set up.

A

B

C

D

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The correct Answer is:
A
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A Zener of power rating 1 W is to be used as a voltage regulator. If Zener has a breakdown of 5V and it has to regulate voltage which fluctuated between 3 V and 7 V, what should be the value of R_(s) for safe operation (see figure) ?

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