Question:

When a $p-n$ junction diode is connected in forward bias its barrier potential

Updated On: Jun 3, 2024
  • decreases and less current flows in the circuit
  • decreases and more current flows in the circuit
  • increases and more current flows in the circuit
  • decreases and no current flows in the circuit
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The Correct Option is B

Solution and Explanation

When $p-n$ junction diode is forward biased, more number of charge carriers (electrons in n-side and holes in $p$-side) moves through the junction. Therefore, in forward biasing barrier potential is reduced. Thus, increasing the current in the circuit.
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Concepts Used:

Semiconductors

Semiconductors are a crystalline solid materials, whose electrical conductivity lies between a conductor and an insulator. Semiconductors are mainly used in the manufacturing of electronic devices like capacitors, transistors, diodes, Integrated circuits, etc.

Properties of Semiconductor:

  1. Semiconductor acts like an insulator at Zero Kelvin. On increasing the temperature, it works as a conductor.
  2. Due to their exceptional electrical properties, semiconductors can be modified by doping to make semiconductor devices suitable for energy conversion, switches, and amplifiers.
  3. Lesser power losses.

Uses of Semiconductor:

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