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Differentiate between the threshold voltage and the breakdown voltage for a diode. - Physics

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Question

Differentiate between the threshold voltage and the breakdown voltage for a diode.

Distinguish Between
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Solution

  Threshold voltage Breakdown voltage
(i) The forward voltage at which the current through the p-n junction starts increasing rapidly is known as the threshold voltage. Reverse voltage at which the p-n junction breakdown occurs is called the breakdown voltage.
(ii) The magnitude of this voltage is lower than the breakdown voltage. The magnitude of this voltage is higher than the threshold voltage.
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2021-2022 (March) Term 2 - Delhi Set 1

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Consider an npn transistor with its base-emitter junction forward biased and collector base junction reverse biased. Which of the following statements are true?

  1. Electrons crossover from emitter to collector.
  2. Holes move from base to collector.
  3. Electrons move from emitter to base.
  4. Electrons from emitter move out of base without going to the collector.

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