Home
Class 12
PHYSICS
The current gain in the CE mode of a tra...

The current gain in the CE mode of a transistor is 10. If the input impedance is 10 K`Omega` and load resistance = 60 K`Omega`, then the power gain will be

A

200

B

400

C

600

D

700

Text Solution

Verified by Experts

The correct Answer is:
C

`A_V=beta R_o/R_i = 10 xx 60/ 10=60`
Power gain= Voltage gain x Current gain
`=A_V xx beta = 60xx10`=600
Promotional Banner

Topper's Solved these Questions

  • ROTATIONAL MOTION

    MARVEL PUBLICATION|Exercise TEST YOUR GRASP - 3|8 Videos
  • STATIONARY WAVES

    MARVEL PUBLICATION|Exercise TEST YOUR GRASP-8|20 Videos

Similar Questions

Explore conceptually related problems

The current gain in the common emitter mode of a transistor is 10. The input impedance is 20kOmega and load of resistance is 100k Omega . The power gain is

A common emitter amplifier is designed with NPN transistor (alpha = 0.99) . The input impedance is 1 K Omega and load is 10 K Omega . The voltage gain will be

A CE amplifier is designed with a transistor having alpha =0.99 . Input impedance is 1 k Omega and load is 10 k Omega . Voltage gain will be :

Current gain of a transistor is 50 if the collector resistance is 5 k omega and input resistance is 1 k omega calculate the voltage gain

A common emitter amplifier is designed with NPN transistor (alpha=0.99) . The input impedence is 1k Komega and load is 10 Komega . The voltage gain will be

In common emitter transistor, the input resistance is 200Omega and bad resistance is 40kOmega . If current gain is 80 then voltage gain is

In a common base transistor amplifier if the input resistance R_(i) is 200 Omega and load resistance R_(L) is 20K Omega , find voltage gain (alpha=0.95)

Power gain for N-P-N transistor is 10^(@) , input resistance 100Omega and output resistance 10000Omega . Find out current gain.

For a common emitter amplifier, input resistance (R_i) = 500Omega and load resistance R_L = 5000Omega . If beta = 60, then the voltage gain is

An npn transistor operates as a common emitter amplifier with a power gain of 10^6 . The input circuit resistance is 100 Omega and the output load resistance is 10 k Omega . The common emitter current gain ' beta ' will be (Round off to the Nearest Integer)

MARVEL PUBLICATION-SEMICONDUCTORS -MCQs
  1. In a n-p-n transister circuit the collector current is 9 mA. If 90% of...

    Text Solution

    |

  2. For a transistor, beta = 50. To change the collector current by 350 mu...

    Text Solution

    |

  3. The current gain in the CE mode of a transistor is 10. If the input im...

    Text Solution

    |

  4. When a transistor is operated in the active region, it cannot be used

    Text Solution

    |

  5. For a transistor 1/alpha -1/beta is equal to

    Text Solution

    |

  6. What is the current gain for a transistor used as a common emitter amp...

    Text Solution

    |

  7. The difference in the working of a step up transformer and an amplifie...

    Text Solution

    |

  8. In an oscillator, for sustained oscillations, Barkhausen criterion is ...

    Text Solution

    |

  9. To obtain the current gain (beta) of a transistor, when it is in CE mo...

    Text Solution

    |

  10. The r.m.s. value of the base current ofa transistor is 10muA. What is ...

    Text Solution

    |

  11. When a transistor amplifier having current gain of 75 is given an inpu...

    Text Solution

    |

  12. The input signal given to a CE amplifier having a voltage gain of 150 ...

    Text Solution

    |

  13. For a common emitter amplifier, the voltage gain is 40. Its input and ...

    Text Solution

    |

  14. In a common-base amplifier, the phase difference between the input sig...

    Text Solution

    |

  15. A transistor connected in CE mode , has a current gain of 50. If the l...

    Text Solution

    |

  16. In a common base mode of transistor, collector current is 5.488 mA for...

    Text Solution

    |

  17. Three amplifier circuit are connected in series. The voltage gain of e...

    Text Solution

    |

  18. The current gain of a transistor in common base mode is 0.99. What is ...

    Text Solution

    |

  19. When a transistor amplifier having current gain of 75 is given an inpu...

    Text Solution

    |

  20. For a common emitter amplifier, input resistance (Ri) = 500Omega and l...

    Text Solution

    |