Zener diodes allow a current to flow in the reverse direction, when the a) voltage reaches above a certain value b) temperature reaches above a certain value c) current always flows in the reverse direction only d) current cannot flow in the reverse direction
Zener diodes allow a current to flow in the reverse direction, when the a) voltage reaches above a certain value b) temperature reaches above a certain value c) current always flows in the reverse direction only d) current cannot flow in the reverse direction
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a
Explanation: Zener diode has voltage regulating property. When voltage reaches above
a certain value (Zener voltage), current starts to flow in the reverse direction