Home
Class 12
PHYSICS
The input resistance of a common emitter...

The input resistance of a common emitter transistor amplifier, if the output resistance is `500 kOmega`, the current gain `alpha=0.98` and the power gain is `6.0625 xx 10^(6)` is

A

`198Omega`

B

`300Omega`

C

`100Omega`

D

`400Omega`

Text Solution

Verified by Experts

The correct Answer is:
A
Promotional Banner

Topper's Solved these Questions

  • SEMICONDUCTORS

    TARGET PUBLICATION|Exercise Evaluation Test|17 Videos
  • SEMICONDUCTORS

    TARGET PUBLICATION|Exercise Critical thinking|32 Videos
  • ROTATIONAL MOTION

    TARGET PUBLICATION|Exercise MCQ|245 Videos
  • STATIONARY WAVES

    TARGET PUBLICATION|Exercise EVALUATION TEST|16 Videos
TARGET PUBLICATION-SEMICONDUCTORS-Competitive thinking
  1. The minimum potential difference between the base and emitter required...

    Text Solution

    |

  2. The input characteristics of a transistor in CE mode is the graph obt...

    Text Solution

    |

  3. The input resistance of a common emitter transistor amplifier, if the ...

    Text Solution

    |

  4. The collector supply voltage is 6 V and the voltage drop across a resi...

    Text Solution

    |

  5. In a transistor if collector current is 25 mA and base current is 1 mA...

    Text Solution

    |

  6. For a common-emitter transostor amplifier, the current gain is 60. If ...

    Text Solution

    |

  7. For CE transistor amplifier, the audio signal voltage across the colle...

    Text Solution

    |

  8. A transistor is used as a common emitter amplifier with a load resista...

    Text Solution

    |

  9. A change of 0.04 V takes place between the base and the emitter when a...

    Text Solution

    |

  10. A transistor is connected in CE configuration. In the collector circui...

    Text Solution

    |

  11. The dc common emitter current gain of a n-p-n transistor is 50. The po...

    Text Solution

    |

  12. In an oscillator, for sustained oscillations, Barkhaused criterion is ...

    Text Solution

    |

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

    Text Solution

    |

  14. The resonce frequency of the tank cuircuit of an oscillator when L=(1)...

    Text Solution

    |

  15. Which of following gates produces output of 1?

    Text Solution

    |

  16. The following truth table corresponds to the logic gate |(A,0,0,1,1)...

    Text Solution

    |

  17. The logic behind 'NOR' gate is that it gives

    Text Solution

    |

  18. Which logic gate produces LOW output when any of the inputs in HIGH

    Text Solution

    |

  19. The output of a NAND gate is 0

    Text Solution

    |

  20. Which gate can be obtained by shorting both the input terminals of a N...

    Text Solution

    |