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

J & K CETJ & K CET 2008Semiconductor Electronics: Materials Devices and Simple Circuits

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.