Home
Class 11
PHYSICS
A n-p-n transistor conducts when...

A n-p-n transistor conducts when

A

both collector and emitter are positive with respect to the base

B

collector is positive and emitter is negative with respect to the base

C

collector is positive and emitter is at same potential as the base

D

both collector and emitter are negative with respect to the base

Text Solution

Verified by Experts

The correct Answer is:
B, D
Promotional Banner

Topper's Solved these Questions

  • SEMICONDUCTORS

    ALLEN|Exercise Part-3(Exercise-2)|49 Videos
  • SEMICONDUCTORS

    ALLEN|Exercise Part-3(Exercise-3)|27 Videos
  • SEMICONDUCTORS

    ALLEN|Exercise Part-3(Exercise-4)|51 Videos
  • PHYSICAL WORLD, UNITS AND DIMENSIONS & ERRORS IN MEASUREMENT

    ALLEN|Exercise EXERCISE-IV|8 Videos
  • WAVES AND OSCILLATIONS

    ALLEN|Exercise Part-1(Exercise-05)[B]|42 Videos

Similar Questions

Explore conceptually related problems

A npn transistor conducts when

With respect to the potential of emitter, base and collector, a NPN transistor conducts when

In n-p-n transistor circuit, the collector current is 20 mA. If 90% of the electrons emitted reache the collector, then the

In a n-p-n transistor circuit, the collector current is 10 mA. If 80 percent of electrons emitted reach to the collector. Then the base current (in mA) will be

In an n-p-n transistor circuit , the collector currents is 10mA . If 95 per cent of the electrons emitted reach the collector, which of the following statements are true?

In n-p-n transistor circuit, the collector current is 10 mA . If 90% of the holes reach the collector, find emitter and base currents.

Assertion : Two p-n junction diodes placed back to back, will work as a n-p-n transistor. Reason: The p-region of two p-n junction diodes back to back will form the base of n-p-n transistor.

(i) Draw a circuit diagram to study the input and output characteristics of an n-p-n transistor in its common emitter configuration. Draw the typical input and output characteristics. (ii) Explain, with the hepl of a circuit diagram, the working of n-p-n transistor as a common emitter amplifier.

In a n - p - n transistor circuit, the collector current is 10 mA . If 95 per cent of the electrons emitted reach the collector, which of the following statements are true ?

Draw the diagram of the circuit arangement used for studying the 'input' and the 'output' characteristics of an n-p-n transistor inits CE configuration. Briefly explain how these two types of characteristics are obtained and draw these characteristics. (b) 'Define' the terms (i) Input resistance, (ii) Output resistance , (iii) Current amplification factor, for a given transistor.

ALLEN-SEMICONDUCTORS-Part-3(Exercise-1)
  1. If the forward voltage in a diode is increased, the width of the deple...

    Text Solution

    |

  2. In a N-P-N transistor circuit, the collector current is 10 mA.If 90 % ...

    Text Solution

    |

  3. A n-p-n transistor conducts when

    Text Solution

    |

  4. For pure ''Ge'' semiconductor quantity of ''e'' and hole is 10^(19) e...

    Text Solution

    |

  5. When a p-n junction diode is reverse biased, then

    Text Solution

    |

  6. In a p-n junction having depletion layer of thickness 10^(-6) m , the ...

    Text Solution

    |

  7. A Ge specimen is doped with Al. The concentration of electron - hole p...

    Text Solution

    |

  8. Assuming that the junction diode is ideal the current through the diod...

    Text Solution

    |

  9. When two semiconductor of p and n type are brought in to contact, they...

    Text Solution

    |

  10. In a forward biased PN- junction diode, the potential barrier in the d...

    Text Solution

    |

  11. For a common base configuration of PNP transistor (l(C))/(l(E))=0.98, ...

    Text Solution

    |

  12. For a transistor IC/IE=0.96, then current gain for common emitter conf...

    Text Solution

    |

  13. A transistor has an alpha = 0.95 It has change in emitter current of 1...

    Text Solution

    |

  14. For a transistor I(e) = 25 mA and I(b) = 1mA. The value of current gai...

    Text Solution

    |

  15. In Boolean algebra A + B = Y implies that :

    Text Solution

    |

  16. Which of the following gates corresponds to the truth table given belo...

    Text Solution

    |

  17. In the Boolean algebra bar(A).bar(B) equals

    Text Solution

    |

  18. Given below are symbols for some logic gates :- The XOR gate and ...

    Text Solution

    |

  19. The given symbol represents

    Text Solution

    |

  20. {:(A,B,X),(1,1,0),(0,1,0),(1,0,0),(0,0,1):} The following truth-tabl...

    Text Solution

    |