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COMEDK2020PhysicsSemiconductors

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

Options

  1. Adecreases and less current flows in the circuit
  2. Bdecreases and more current flows in the circuit
  3. Cincreases and more current flows in the circuit
  4. Ddecreases and no current flows in the circuit

Correct answer

B. decreases and more current flows in the circuit

Step-by-step solution

When a p-n junction diode is connected in forward bias, then its potential barrier decreases because more number of charge carriers (electrons in n -side and holes in p -side) move through the junction. Due to increase of drifting of charge carriers, electric current is increased.

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