Advertisements
Advertisements
प्रश्न
What happens when a forward bias is applied to a p-n junction?
Advertisements
उत्तर
In forward biasing, the applied voltage mostly drops across the depletion region, and the voltage drop across the p-side and n-side of the junction is negligible. The direction of the applied voltage (V) is opposite to the built-in potential Vo. As a result, the depletion layer width decreases and the barrier height is reduced. The effective barrier height under forward bias is (Vo − V).
APPEARS IN
संबंधित प्रश्न
Explain the working of P-N junction diode in forward and reverse biased mode.
When a forward bias is applied to a p-n junction, it ______.
In the following diagram, is the junction diode forward biased or reverse biased ?
The gain factor of an amplifier in increased from 10 to 12 as the load resistance is changed from 4 kΩ to 8 kΩ. Calculate (a) the amplification factor and (b) the plate resistance.
The expected energy of the electron at absolute zero is called:-
In a semiconductor diode, the barrier potential offers opposition to only
In the circuit shown in figure, if the diode forward voltage drop is 0.3 V, the voltage difference between A and B is ______.

When an electric field is applied across a semiconductor ______.
- electrons move from lower energy level to higher energy level in the conduction band.
- electrons move from higher energy level to lower energy level in the conduction band.
- holes in the valence band move from higher energy level to lower energy level.
- holes in the valence band move from lower energy level to higher energy level.
The breakdown in a reverse biased p–n junction diode is more likely to occur due to ______.
- large velocity of the minority charge carriers if the doping concentration is small.
- large velocity of the minority charge carriers if the doping concentration is large.
- strong electric field in a depletion region if the doping concentration is small.
- strong electric field in the depletion region if the doping concentration is large.
Choose the correct circuit which can achieve the bridge balance.
