Question
Physics Question on Semiconductor electronics: materials, devices and simple circuits
When a p−n junction diode is connected in forward bias its barrier potential
A
decreases and less current flows in the circuit
B
decreases and more current flows in the circuit
C
increases and more current flows in the circuit
D
decreases and no current flows in the circuit
Answer
decreases and more current flows in the circuit
Explanation
Solution
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.