Home
Class 12
PHYSICS
In the common emitter amplifier circuit,...

In the common emitter amplifier circuit, Fig. an npn transistor with output voltage of the amplifier as 1 V, the current gain of transistor amplifier is :

A

20

B

25

C

50

D

75

Text Solution

Verified by Experts

The correct Answer is:
C
`A_(v)=V_(0)/V_(i)=betaR_(0)/R_(BE)`
`beta=V_(0)/V_(i)xxR_(BE)/R_(0)=(1V)/(2mV)xx(1kOmega)/(10kOmega)=50`
Promotional Banner

Topper's Solved these Questions

  • ELECTRONIC DEVICES

    PRADEEP|Exercise LONG QUESTION ANSWER|2 Videos

  • ELECTRONIC DEVICES

    PRADEEP|Exercise PROBLEMS FOR PRACTICE|7 Videos

  • ELECTRONIC DEVICES

    PRADEEP|Exercise HIGHER ORDER THINKING SKILLS|1 Videos

  • ELECTROMAGNETIC WAVES

    PRADEEP|Exercise II Focus multiple choice question|5 Videos

  • ELECTROSTATICS

    PRADEEP|Exercise ASSERTION-REASON TYPE QUESTIONS|2 Videos

Similar Questions

Explore conceptually related problems

In a common emitter amplifier circuit using an n-p-n transistor, the phase difference between the input and the output voltages will be:-

For a transistor amplifier, the voltage gain

In given circuit, current gain of transistor is beta=100 , the output of amplifier will be

For transistor amplifier, the voltage gain

In the following common emitter configuration an n-p-n transistor with current gain beta = 100 is used. The output voltage of the amplifier will be

In the following common emitter configuration, and n-p-n transistor with current gain beta=100 is used. The output voltage of the amplifier will be

Assertion : In a common emitter transistor amplifier, the input current is much less than output current. Reason : The common-emitter transistor amplifier has a very high input impedance.

In the following common emitter configuration an n-p-n transistor with current gain beta=100 is used. What is the output voltage of the amplifier ?

What is the current gain for a transistor used as a common emitter amplifier, if the current gain of the same transistor used in common base mode is 0.95 ?

PRADEEP-ELECTRONIC DEVICES-Exercise
  1. In the following common emitter configuration an NPN transistor with c...

    Text Solution

    |

  2. A CE amplifier has a voltage gain 50, an input impedance of 1000 ohm, ...

    Text Solution

    |

  3. In the common emitter amplifier circuit, Fig. an npn transistor with o...

    Text Solution

    |

  4. The voltage gain of the following amplifier Fig. is 200. The value of ...

    Text Solution

    |

  5. The voltage gain of the amplifier shown in Fig.is

    Text Solution

    |

  6. An amplifier has a voltage gain A(v)= 1000. The voltage gain in dB is:

    Text Solution

    |

  7. The voltage gain of an amplifier with 9% negative feedback is 10. The ...

    Text Solution

    |

  8. For a common emitter amplifier, the audio frequency voltage across the...

    Text Solution

    |

  9. In a common emitter configuration, a transistor has beta=50 and input ...

    Text Solution

    |

  10. In common emitter transistor amplifier circuit, the input signal volta...

    Text Solution

    |

  11. A npn transistor is connected in common emitter configuration in a giv...

    Text Solution

    |

  12. Transfer characterstics [output voltage (V(o)) vs. input voltage (V(i)...

    Text Solution

    |

  13. In a common emitter transistor transistor amplifier, the audio signal ...

    Text Solution

    |

  14. The Boolean expression P+bar(P)Q, where P and Q are the inputs of the ...

    Text Solution

    |

  15. Which logic gate is represented by the following combination of logic ...

    Text Solution

    |

  16. If (i), (ii), (iii), (iv) are inputs to a gate and x is output, then a...

    Text Solution

    |

  17. Fig, shows a logic gate circuit with two input A and B and the output ...

    Text Solution

    |

  18. To write the decimal number 37 in binary, how many binary digit are re...

    Text Solution

    |

  19. What is the decimal number of binary number (111001.01)(2)?

    Text Solution

    |

  20. The combination of the 'NAND' gates shown here (Fig.) and (ii)) are eq...

    Text Solution

    |