Working Principles of Diode

What are the majority carriers in n-type semiconductor?

• Free electrons

• Holes

• Positive ions

• Negative ions

What are the majority carriers in p-type semiconductor?

• Free electrons

• Holes

• Positive ions

• Negative ions

What is the region called where there is a lack of free electrons and holes across the junction of n-type and p-type materials?

• Depletion region

• Conduction region

• Excitation region

• Barrier region

What creates a static electric field and barrier potential across the junction of a diode?

• Free carriers

• Thermal excitation

• Positive ions

• Negative ions

What is the forward bias voltage for a silicon diode?

• 0.7 volts

• 0.3 volts

• 1.0 volts

• 2.0 volts

What happens when the forward bias voltage of a diode is increased beyond the barrier potential?

• No current flows

• Reverse current flows

• Voltage drop increases

• Barrier potential decreases

What happens to the depletion layer of the junction when the reverse biased voltage is increased?

• It becomes narrower

• It becomes wider

• It disappears

• It remains the same

What is the current called that flows through the diode in reverse biased condition?

• Forward current

• Saturation current

• Minority current

• Reverse current

What are the minority charge carriers in a diode?

• Free electrons

• Holes

• Positive ions

• Negative ions

What is the tiny current that flows from n-type to p-type in a diode in reverse biased condition called?

• Forward current

• Saturation current

• Minority current

• Reverse current