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Choose the correct option. Current through a reverse-biased p-n junction increases abruptly at:

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Question

Choose the correct option.

Current through a reverse-biased p-n junction increases abruptly at:

Options

  • Breakdown voltage

  • 0.0 V

  • 0.3V

  • 0.7V

MCQ
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Solution

Current through a reverse-biased p-n junction increases abruptly at: Breakdown voltage

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Chapter 14: Semiconductors - Exercises [Page 256]

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Balbharati Physics [English] Standard 11 Maharashtra State Board
Chapter 14 Semiconductors
Exercises | Q 1. iii) | Page 256

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In a p-n junction diode, the current I can be expressed as

I = `"I"_0 exp ("eV"/(2"k"_"BT") - 1)`

where I0 is called the reverse saturation current, V is the voltage across the diode and is positive for forward bias and negative for reverse bias, and I is the current through the diode, kBis the Boltzmann constant (8.6×10−5 eV/K) and T is the absolute temperature. If for a given diode I0 = 5 × 10−12 A and T = 300 K, then

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Answer in detail.

Discuss the effect of external voltage on the width of depletion region of a p-n junction.


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p-n junction diode is formed


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