Question

p-type crystal of p-n junction diode is connected to a positive terminal of battery and n-type crystal connected to negative terminal of battery. Then

• A. diode is forward biased.
• B. diode is reversed biased.
• C. potential barrier in depletion layer increases.
• D. potential barrier in depletion layer remains unchanged.

Answer 1

The correct option is A diode is forward biased.

By convention, forward biasing of diode is defined in such a way that the positive terminal of the battery is connected to the anode (p-type crystal) of the diode whereas the negative terminal of the battery is connected to the cathode (n-type crystal) of the diode.

Moreover when the diode is forward biased then the potential barrier in depletion layer decreases.