Consider a logic gate circuit where an LED is connected to the output of an AND gate. The two inputs to this AND gate are: (1) the output of an OR gate with inputs A and B, and (2) the output of a NOR gate with inputs C and D. For which of the following input combinations (A, B, C, D) will the LED glow (output = 1)?

Two statements are given below: Statement A: When the forward bias voltage across a p-n junction diode increases above a certain threshold voltage, the diode current increases significantly. Statement B: This current is called reverse saturation current. Choose the correct answer:

When an electric field is applied across a semiconductor, which of the following statements is correct?