Home
Class 12
PHYSICS
A common emitter amplifier has a voltage...

A common emitter amplifier has a voltage gain of 50, an input impedance of `100Omega` and an output impedance of 200 `Omega`. The power gain of the amplifier is :-

A

500

B

1000

C

1250

D

50

Text Solution

Verified by Experts

The correct Answer is:
c
Voltahe gain `=betaxx` impedance gain
`rArr50=betaxx(200)/(100)`
`rArrbeta=25`
Also power gain `=beta^(2)xx` impedance gain
`=(25)^(2)xx(200)/(100)=1250`
Promotional Banner

Topper's Solved these Questions

  • SEMICONDUCTOR DEVICES AND LOGIC GATES

    BITSAT GUIDE|Exercise BITSAT Archives|5 Videos

  • SOLVED PAPER 2019 BITSAT

    BITSAT GUIDE|Exercise PART -I ( PHYSICS ) |40 Videos

Similar Questions

Explore conceptually related problems

A common emitter amplifier has a voltage gain of 50, an input impedance of 100Omega and an output impedace of 200Omega . The power gain of the amplifier is

A common emitter amplifier has a voltage gain of 50 , an input impedence of 100 Omega and an output impedence of 200 Omega . The power gain of the of the amplifier is

A common emitter amplifier has a voltage gain of 50, an input impedance of 200 Omega and an output impedance of 400 Omega . Calculate the power gain of the amplifier.

A CE amplifier has voltage gain of 50, an input impedance of 2000 ohm and an output impedance of 400 ohm. The power gain of the amplifier will be

A CE amplifier has a voltage gain 50, an input impedance of 1000 ohm, and an output impendance of 200 ohm. The power gain of the amplifier will be

BITSAT GUIDE-SOLVED PAPER 2017 -(PART -I) PHYSICS
  1. An iceberg of density 900kg//m^(3) is floating in water of density 100...

    Text Solution

    |

  2. The total energy of an electron in the first excited state of hydrogen...

    Text Solution

    |

  3. A common emitter amplifier has a voltage gain of 50, an input impedanc...

    Text Solution

    |

  4. The horizontal range and maximum height attained by a projectile are R...

    Text Solution

    |

  5. A balloon is filled at 27^(@)C and 1 atm pressure by 500 m^(3) He. At-...

    Text Solution

    |

  6. The ratio of intensity at the centre of a bright fringe to the intensi...

    Text Solution

    |

  7. A rectangular block of mass m and area of cross-section A floats in a ...

    Text Solution

    |

  8. Three charges are placed at the vertices of an equilateral trianlge of...

    Text Solution

    |

  9. A body of mass m falls from a height h onto the pan of a spring balanc...

    Text Solution

    |

  10. The activity of a radioactive sample is measures as N0 counts per minu...

    Text Solution

    |

  11. A plano-convex lens fits exactly into a plano-concave lens. Their plan...

    Text Solution

    |

  12. In Fig, E =5 volt , r = 1 Omega, R(2) = 4 Omega, R(1) = R(3) = 1 Omeg...

    Text Solution

    |

  13. A block A of mass 100 kg rests on another block B of mass 200 kg and i...

    Text Solution

    |

  14. A unifrom rod of length l and mass m is free to rotate in a vertical p...

    Text Solution

    |

  15. Monochromatic radiation of wavelength lambda is incident on a hydrogen...

    Text Solution

    |

  16. A coil in the shape of an equilateral triangle of side l is suspended ...

    Text Solution

    |

  17. Work done in increasing the size of a soap bubble from a radius of 3cm...

    Text Solution

    |

  18. The velocity of a projectile at the initial point A is (2hati+3hatj) m...

    Text Solution

    |

  19. In the circuit shown , the heat produced in 5Omega resistot is 10"cal"...

    Text Solution

    |

  20. An alpha - particle after passing through a potential difference of V...

    Text Solution

    |