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Question

A Zener diode:

A
is a battery.
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B
has a constant voltage in the breakdown region.
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C
has a barrier potential of 1 V.
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D
is forward biased.
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Solution

The correct option is B has a constant voltage in the breakdown region.
A Zener diode is a form of a semiconductor diode in which at a critical reverse voltage (also known as Zener voltage) a large reverse current can flow. This Zener voltage is a constant value of voltage, which is in the breakdown region.

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