Question 1 of 10
In a PN junction diode, what type of bias eliminates the potential barrier?
Forward bias provides the necessary voltage to overcome the potential barrier in a diode, allowing current to flow.
Question 2 of 10
What is the term for the voltage at which a diode begins to conduct significantly in forward bias?
Cut-off voltage, also known as the knee voltage, is the threshold where the diode starts conducting forward current substantially.
Question 3 of 10
What happens to the forward current of a diode beyond the cut-off voltage?
Beyond the cut-off voltage, the forward current increases exponentially due to the decreasing resistance of the diode.
Question 4 of 10
What is the primary cause of reverse current in a reverse-biased diode?
Reverse current is caused by the movement of minority carriers across the depletion region in a reverse-biased diode.
Question 5 of 10
What can happen to a diode if the reverse voltage exceeds its breakdown voltage?
Exceeding the breakdown voltage can cause permanent damage to the diode due to excessive current and heat.
Question 6 of 10
What is connected in series with a diode to measure its current?
An ammeter is connected in series to measure the current flowing through the diode.
Question 7 of 10
What is connected in parallel with a diode to measure its voltage?
A voltmeter is connected in parallel to measure the voltage across the diode.
Question 8 of 10
What is the purpose of a variable resistor in the diode circuit mentioned?
The variable resistor controls the supply voltage, allowing for different bias conditions to be applied to the diode.
Question 9 of 10
What happens to the reverse current as the reverse voltage increases, before breakdown?
As the reverse voltage increases, the reverse current increases until it reaches the breakdown point.
Question 10 of 10
What could be a potential consequence of excessive forward current in a diode?
Excessive forward current can cause the diode to overheat and potentially be damaged.