Two statements are given for a p–n junction diode. A: When forward-bias voltage rises beyond a threshold, the diode current increases significantly. B: This current is called reverse saturation current. Choose the correct statement combination.
Options

Question

Two statements are given for a p–n junction diode. A: When forward-bias voltage rises beyond a threshold, the diode current increases significantly. B: This current is called reverse saturation current. Choose the correct statement combination.

Options

G1 Physics · Accepted Answer

Step 1: Forward bias lowers the potential barrier and injects majority carriers through the junction. Step 2: Beyond the knee/threshold voltage, the forward diode current increases sharply. Therefore statement A is true. Step 3: Reverse saturation current is the small minority-carrier current in reverse bias, not the sharply increasing forward current. Therefore B is false. Final answer: A true and B false (Option C).