Understanding PN Junction Diodes

What happens to a PN junction diode in forward bias?

• The diode conducts current.

• The diode blocks current.

• The diode becomes an insulator.

• The diode generates voltage.

Explain the characteristics of a diode in reverse bias.

• The depletion region becomes narrow in reverse bias.

• In reverse bias, a diode conducts a large current flow.

• Reverse bias causes the diode to act as a short circuit.

• In reverse bias, a diode exhibits a wide depletion region, minimal current flow, and a potential for breakdown at high reverse voltages.

What is the significance of the threshold voltage in forward bias?

• The threshold voltage is significant as it determines the point at which a diode begins to conduct in forward bias.

• The threshold voltage is the same for all diodes regardless of type.

• The threshold voltage is irrelevant in forward bias.

• The threshold voltage indicates the maximum reverse bias voltage.

Describe the current flow in a PN junction diode during reverse bias.

• During reverse bias, the diode conducts a large forward current.

• During reverse bias, the current flow in a PN junction diode is minimal, primarily consisting of a small leakage current due to minority carriers.

• The current flow is constant and high regardless of biasing.

• Reverse bias causes the diode to short circuit and allow maximum current.

What are the effects of increasing reverse voltage on a PN junction diode?

• Increased reverse voltage reduces the depletion region.

• Higher reverse voltage improves diode conductivity.

• Reverse voltage has no effect on leakage current.

• Increased reverse voltage widens the depletion region, increases leakage current, and may lead to breakdown.