Home
Class 12
PHYSICS
When npn transistor is used as an ampli...

When npn transistor is used as an amplifler

A

electrons move from base to collector

B

holes move from emitter to base

C

electrons move from collector to base

D

boles move from base to emitter

Text Solution

Verified by Experts

The correct Answer is:
D
Increase of temperature increases resistance of conductor but decreases resistance of semiconductor.
Promotional Banner

Topper's Solved these Questions

  • SEMICONDUCTORS

    RESONANCE|Exercise Exercise 2|16 Videos

  • REVISION DPP

    RESONANCE|Exercise All Questions|444 Videos

  • SIMPLE HARMONIC MOTION

    RESONANCE|Exercise Advanced Level Problems|13 Videos

Similar Questions

Explore conceptually related problems

When n-p-n transistor is used as an amplifier :

When n-p-n transistor is used as an amplifier

When an n-p-n transistor is used as an amplifier, then

When NPN transistor is used as an amplifier

When N-P-N transistor is used as an amplifier-

When a transistor is used as an oscillator, why is it necessary to feed back energy to L-C circuit?

Which of the following statement is true for a p-n-p transistor when used in an amplifier circuit?

To use a transistor as an amplifier

RESONANCE-SEMICONDUCTORS-Exercise 3
  1. When p-n junction diode is forward biased then

    Text Solution

    |

  2. When npn transistor is used as an amplifler

    Text Solution

    |

  3. The electrical conductivity of a semiconductor increases when electrom...

    Text Solution

    |

  4. In a common base ampifier , the phase difference between the input sig...

    Text Solution

    |

  5. If a full wave reactifier circuit is operating from 50 Hz mains, the f...

    Text Solution

    |

  6. If the ratio of the concentration of electron to that of holes in a se...

    Text Solution

    |

  7. In a common base mode of a transition , the collector current is 5.48...

    Text Solution

    |

  8. If the lattice constant of this semiconductor is decreased, then which...

    Text Solution

    |

  9. The circuit has two oppositively connected ideal diodes in parallel wh...

    Text Solution

    |

  10. If a p-n junction diode, a square input signal of 10 V is applied as s...

    Text Solution

    |

  11. Carbon , silicon and germanium have four valence electrons each . At r...

    Text Solution

    |

  12. A working transitor with its three legs marked P, Q and R is tested us...

    Text Solution

    |

  13. In the circuit below, A and B represents two inputs and C represents t...

    Text Solution

    |

  14. The Fig shown input waveforms A and B to a logic gate. Draw the output...

    Text Solution

    |

  15. a p -n juction (D) shown in the figure can act an a rectifier An alter...

    Text Solution

    |

  16. The output of an OR gate is connected to both the inputs of a NAND gat...

    Text Solution

    |

  17. Truth table for system of four NAND gates as shown in figure is : .

    Text Solution

    |

  18. The 1- V characteristic of on LED is

    Text Solution

    |

  19. The forward biased diode connection is

    Text Solution

    |

  20. Two identical p-n junctions may be connected in series in which a batt...

    Text Solution

    |