Home
Class 12
PHYSICS
A transistor is operated in common emitt...

A transistor is operated in common emitter configuration at `V_(c)=2 V` such that a change in the base current from `100 muA` to `200 muA` produces a change in the collector current from `5 mA` to `10 mA`. The current gain is

A

75

B

100

C

150

D

50

Text Solution

Verified by Experts

The correct Answer is:
D
`v_"CE"=2 ` and `DeltaI_b` = (200-100) = 100 `mu`A
`DeltaI_c`=(10-5) = 5 mA
We use the formula for `beta` as `beta_"ac"=((DeltaI_C)/(DeltaI_B))` at constant `V_"CE"`
`therefore beta = (5xx10^(-3))/(100xx10^(-6)) = 5xx10^(-3+4)=50`
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

A transistor is operated in common emitter configuration at V_(c)=2 V such that a change in the base current from 100 muA to 300 muA produces a change in the collector current from 10 mA to 20 mA . The current gain is

A transistor is operated in common emitter configuration at V_C=2 V . Such that a change in the base current from 100 muA to 200 muA produces a change in the collector current of 5mA to 10 mA. The current gain is

A transistor is operated in common emitter configuration at V_(C)=2V such that a change in the base current from 100muA to 300muA produces a change in the collector current from 10 mA to 20 mA. The current gain is

A transistor is operetaed in common-emitter configuration at V_(c)=2V such that a change in the base current from 100mA to 200mA produces a change in the collector current from 5mA to 10mA . The current gain is

A transistor is operated in common emitter configuration at constant collector voltage V_(c)=1.5 V such that a change in the base current from 100 muA to 150 muA produces a change in the collector current from 5 mA to 10 mA . The current gain (beta) is

A transistor is operated in common emitter configuration at constant collector voltage V_(c)= 1.5 V such that a change in the base current from 100 muA to 150 muA produces a change in the collector current from 5 mA to 10 mA. The current gain (beta) is :-

A transsitor is operated in CE configuration at V_(CC) = 2 V such that a change in base current from 100 muA to 200 muA produces a change in the collector current from 9mA to 16.5 mA. The value of current gain, beta is -

MARVEL PUBLICATION-SEMICONDUCTORS -MCQs
  1. In the following common emitter configuration an n-p-n transistor with...

    Text Solution

    |

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

    Text Solution

    |

  3. A transistor is operated in common emitter configuration at V(c)=2 V s...

    Text Solution

    |

  4. In common base circuit of a transistor , current amplification factor ...

    Text Solution

    |

  5. Which logic gate is represented by the following truth table?

    Text Solution

    |

  6. How many NAND gate are used to from AND gate?

    Text Solution

    |

  7. A NOR gate is ON only when all its inputs are

    Text Solution

    |

  8. Which of the following truth table represents an AND gate?

    Text Solution

    |

  9. The truth table of a logic gate is as follows : It corresponds to

    Text Solution

    |

  10. Which logic gate is represented by the following truth table ?

    Text Solution

    |

  11. Which logic gate is represented by the following truth table?

    Text Solution

    |

  12. Give the logic symbol of NAND gate.

    Text Solution

    |

  13. Give the logic symbol of NOR gate.

    Text Solution

    |

  14. The value of bar1 + bar1 is

    Text Solution

    |

  15. When the two inoputs of a NAND gate are shorted, the resulting gats is

    Text Solution

    |

  16. The logic gate circuit given below acts as

    Text Solution

    |

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

    Text Solution

    |

  18. The correct Boolean operation represented by the circuit diagram drawn...

    Text Solution

    |

  19. For which logic gate the following statement is true? All low input...

    Text Solution

    |

  20. The truth table of a logic gate is a table

    Text Solution

    |