Home
Class 12
PHYSICS
Assertion : In a common emitter transist...

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.

A

if both the Assertion and Reason are true and the Reason is the correct explanation of Assertion.

B

if both the Assertion and Reason are true but the reason in not a correct explanation of the Assertion.

C

if the Assertion is true but the Reason is false.

D

if both Assertion and Reason are false.

Text Solution

Verified by Experts

The correct Answer is:
C

The CE amplifier has high output impedance `~~ 10 kOmega` and low input impedance `~~ 1 kOmega`. So assertion is true but reason is false.
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 the input signal is applied across

In a common emitter amplifier, the input and output voltage are out of phase by

In a common emitter transistor amplifier, the output resistance is 500Omega and the current gain beta=49 . If the power gain of the amplifier is 5xx10^(6) , the input resistance is

Common emitter transistor is used in which region as an amplifier.

What is the phase relationship in the output and input voltage in the common base transistor amplifier.

PRADEEP-ELECTRONIC DEVICES-Exercise
  1. The number desnity of donor atoms which have to be added to an intrins...

    Text Solution

    |

  2. Assertion : The value of current through P - n junction in the given f...

    Text Solution

    |

  3. Assertion : In a common emitter transistor amplifier, the input curren...

    Text Solution

    |

  4. Assertion : Any logic can be constructed using NAND gate Reason : NA...

    Text Solution

    |

  5. Assertion : The electrons in the conduction band have higher energy th...

    Text Solution

    |

  6. Assertion : The energy gap between the valence band and conduction ban...

    Text Solution

    |

  7. Assertion : p-n junction diode can be used even at ultra high frequenc...

    Text Solution

    |

  8. Assertion: Two P-N junction diodes placed back to back, will work as a...

    Text Solution

    |

  9. Assertion : The colour of light emitted by a LED depends on its forwar...

    Text Solution

    |

  10. Assertion : When baseregion has larger width, the collector current in...

    Text Solution

    |

  11. Assertion: NAND or NOR gates are called digital building blocks. Rea...

    Text Solution

    |

  12. Statement-1 : The temperature coefficient of resistance is positive fo...

    Text Solution

    |

  13. Statement-1 : When the temperature of a semiconductor is increased, th...

    Text Solution

    |

  14. Statement-1 : A p-type semiconductor has ney positive charge on it. ...

    Text Solution

    |

  15. Statement-1 : At a fixed temperature, silicon will have a minimum cond...

    Text Solution

    |

  16. Statement-1 : The direction of diffusion current in a junction diode i...

    Text Solution

    |

  17. Statement-1 : A transistor with common emitter mode has current gain 5...

    Text Solution

    |

  18. Assertion: NOT gate is also called inverter circuit. Reason: NOT gat...

    Text Solution

    |

  19. A specimen of silicon is to be made p-type semiconductor. For this one...

    Text Solution

    |

  20. For n-type semiconductor, it is stated that (i) there are more numbe...

    Text Solution

    |