Reverse Bias
Trending Questions
Q.
Determine the current in each branch of the network shown in fig 3.30:
Q. Calculate the amount of charge on capacitor of 4 μF. The internal resistance of battery is 1 Ω :
![](https://df0b18phdhzpx.cloudfront.net/ckeditor_assets/pictures/1481400/original_10.png)
![](https://df0b18phdhzpx.cloudfront.net/ckeditor_assets/pictures/1481400/original_10.png)
- 16 μC
- 8 μC
- zero
- 4 μC
Q. What is a meaning of bias or biasing?
Q. If a small sphere of mass m and charge q is hung from a silk thread at an angle theta with the surface of a vertical charged conducting plate; then for equilibrium of sphere the surface charge density of the plate
Q.
In which region transistor acts as a switch?
Q. The I - V characteristics of a p-n junction diode in forward bias is shown in the figure. The ratio of the dynamic resistance, corresponding to forward biast voltage of 2V and 4V respectively, is
![](https://df0b18phdhzpx.cloudfront.net/ckeditor_assets/pictures/1730245/original_19Q.png)
![](https://df0b18phdhzpx.cloudfront.net/ckeditor_assets/pictures/1730245/original_19Q.png)
- 1:2
- 1:40
- 20:1
- 5:1
Q. A transistor is connected in common-emitter (C-E) configuration. The collector supply is 8V and the voltage drop across a resistor of 800 Ω in the collector circuit is 0.5V. If the current gain factor (α) is 0.96, find the base current.
- 28μA
- 24μA
- 25μA
- 26μA
Q. The equivalent resistance of the circuit across AB is given by (the diodes are ideal)
![](https://search-static.byjusweb.com/question-images/byjus/infinitestudent-images/ckeditor_assets/pictures/614191/original_Q06.PNG)
- 6Ω or 9Ω
- 4Ω or 9Ω
- 4Ω or 13Ω
- 6Ω or 0Ω
Q. (a) Draw the circuit diagram for studying the characteristics of a transistor in common emitter configuration. Explain briefly and show how input and output characteristics are drawn.
(b) The figure shows input waveforms A and B to a logic gate. Draw the output waveform for an OR gate. Write the truth table for this logic gate and draw its logic symbol.
![](https://search-static.byjusweb.com/question-images/byjus/infinitestudent-images/ckeditor_assets/pictures/8340/content_184129_7.png)
(b) The figure shows input waveforms A and B to a logic gate. Draw the output waveform for an OR gate. Write the truth table for this logic gate and draw its logic symbol.
![](https://search-static.byjusweb.com/question-images/byjus/infinitestudent-images/ckeditor_assets/pictures/8340/content_184129_7.png)
Q.
What happens when a diode is shorted?
Q.
The part of a transistor that is heavily doped to produce a large number of majority carriers is
Base
Emitter
Collector
None of these
Q. A small conducting sphere of radius r is lying concentrically inside a bigger hollow
Conducting of radius R. The bigger and smaller spheres are charge with Q and q (Q>q) and are insulated from each other. The potential difference between the spheres will be
Q. For a closed surface the flux associated is is 5 ifadding -75uc to it it becomes 2 initial charge enclosed by the surface will be a)125uc b) -20uc
Q. The reverse biasing in a PN junction diode
- decreases the potential barrier
- increases the potential barrier
- increases the number of majority charge carriers
- increases the number of minority charge carriers
Q. ![](https://search-static.byjusweb.com/question-images/byjus/infinitestudent-images/ckeditor_assets/pictures/586270/original_output-onlinepngtools_-_2020-02-14T204253.665.png)
In the circuit shown, the value of β of the transistor is 48. If the base current supplied 200 μA, what is the voltage at the terminal Y?
![](https://search-static.byjusweb.com/question-images/byjus/infinitestudent-images/ckeditor_assets/pictures/586270/original_output-onlinepngtools_-_2020-02-14T204253.665.png)
In the circuit shown, the value of β of the transistor is 48. If the base current supplied 200 μA, what is the voltage at the terminal Y?
- 0.2 V
- 0.5 V
- 4 V
- 4.8 V
Q.
What is the current in the circuit shown below
0 amp
1 amp
0.10 amp