During reverse bias operation of a PN junction, a feeble current flows known as ____________ which is _________ barrier voltage.
During reverse bias operation of a PN junction, a feeble current flows known as ____________ which is _________ barrier voltage.
Right Answer is:
Reverse Current, Independent of
SOLUTION
Reverse biasing
In reverse biasing, the positive terminal of the battery is connected to the n-side and the negative terminal to the p-side of the junction.
- In the reverse-biased condition, a transient current flows, and both the carriers are pulled away from the junction. The increase in barrier energy is given by eV, where V is the voltage applied across the junction.
- When the potential formed by the widened depletion layer equals the applied voltage, the current ceases except for the small thermal current generated by the minority carriers.
- This current I is called reverse saturation current, which is independent of the applied reverse voltage (V) and increases with the temperature of the diode. The p-n junction conducts the current easily when forward biased and practically no current flows when it is reverse biased.