General Physics Questions And Answers


Q1. 
What accounts for the flow of charge carriers in forward and reverse biasing of silicon p-n diode?

Ans.
Drift in reverse bias and diffusion in forward bias


Q2. 
Which of the following accounts for the presence of the potential barrier in the depletion layer?

Ans.
Ions


Q3. 
Which of the following is true in case of the unbiased p-n junction?

Ans.
The high potential at n-side and low potential at p-side


Q4. 
What causes drift current in a p-n junction diode?

Ans.
Charge carriers density


Q5. 
Why is there a sudden increase in current in Zener diode?

Ans.
Due to rupture of covalent bonds


Q6. 
The base forms two p-n junctions with the emitter and the collector.

Ans.
True


Q7. 
On which of the following does base current not depend on?

Ans.
Number of charge carriers


Q8. 
DC current gain is the ratio of change in collector current to the change in base current.

Ans.
False


Q9. 
How many basic logic gates are there?

Ans.
3


Q10. 
Which of the following gates can have only one input?

Ans.
NOT gate