Home
Class 12
PHYSICS
What is the conductivity of a semiconduc...

What is the conductivity of a semiconductor (in `Omega^(-1) m^(-1)`) if electron density `= 5 xx 10^(12) cm^(-3)` and hole density `= 8 xx 10^(13) cm^(-3)`?
`(mu_(e) = 2.3 V^(-1) s^(-1)m^(2), mu_(h) = 0.01 m^(2) V^(-1) s^(-1))`

A

a. `5.634`

B

b. `1.968`

C

c. `3.421`

D

d. `8.964`

Text Solution

Verified by Experts

The correct Answer is:
B
Promotional Banner

Topper's Solved these Questions

  • PRACTICE PAPPER

    NCERT FINGERTIPS|Exercise Practice Paper 3|50 Videos

  • PRACTICE PAPPER

    NCERT FINGERTIPS|Exercise Practice Paper 3|50 Videos

  • NUCLEI

    NCERT FINGERTIPS|Exercise Assertion And Reason|15 Videos

  • RAY OPTICS AND OPTICAL INSTRUMENTS

    NCERT FINGERTIPS|Exercise Assertion And Reason|15 Videos

Similar Questions

Explore conceptually related problems

What is the conductivity of a semiconductor sample having electron concentration of 5 xx 10^(18) m^(-3) hole concentration of 5 xx 10^(19) m^(-3) , electron mobility of 2.0 m^(2) V^(-1) s^(-1) and hole mobility of 0.01 m^(2) V^(-1) s^(-1)? (Take charge of electron as 1.6 xx 10^(-19)C)

A semiconductor is known to have an electron concentration of 5 xx 10^(13)//cm^(3) and hole concentration of 8 xx 10^(12)//cm^(3) . The semiconductor is

A semiconductor is known to have an electron concentric of 8xx10^(13)//cm^(3) and hole concentration of 5xx10^(12)//cm^(3) . The semiconductor is

A semiconductor has an electron concentration of 0.45 xx 10^(12) m^(-3) and a hole concentration of 5.0 xx 10^(20) m^(-3) . Calculate its conductivity. Given electron mobility = 0.135 m^(2) V^(-1) s^(-1) , hole mobility = 0.048 m^(2) V^(-1) s^(-1) ,

Calculate the resistivity of an n-type semicondutor from the following data:density of conductionelectorns =8xx10^13cm^(-3) ,density of holes =5xx10^12cm^(-3), mobility of conduction electron =2.3xx10^(4)cm^(2)V_(-1)s_(-1) and mobility of holes =100cm^(2)V_(-1)s_(-1 ).

A block of pure silicon at 300 K has a length of 10 cm and an area of 1.0 cm^(2) . A battery of emf 2V is connected across it. The mobility of electron is 0.14 m^(2) v^(-1) S^(-1) and their number density is 1.5 xx 10^(16) m^(-3) . The mobility of holes is 0.05 m^(2) v^(-1) S^(-1) . The hole current is

A block of pure silicon at 300 K has a length of 10 cm and an area of 1.0 cm^(2) . A battery of emf 2V is connected across it. The mobility of electron is 0.14 m^(2) v^(-1) S^(-1) and their number density is 1.5 xx 10^(16) m^(-3) . The mobility of holes is 0.05 m^(2) v^(-1) S^(-1) . The electron current is

A block of pure silicon at 300 K has a length of 10 cm and an area of 1.0 cm^(2) . A battery of emf 2V is connected across it. The mobility of electron is 0.14 m^(2) v^(-1) S^(-1) and their number density is 1.5 xx 10^(16) m^(-3) . The mobility of holes is 0.05 m^(2) v^(-1) S^(-1) . The total current in the block is

NCERT FINGERTIPS-PRACTICE PAPPER-Practice Paper 2
  1. The wavelength of radiation emitted is lambda(0) when an electron jump...

    Text Solution

    |

  2. The intensity ratio of the maxima and minima in an interference patter...

    Text Solution

    |

  3. What is the conductivity of a semiconductor (in Omega^(-1) m^(-1)) if ...

    Text Solution

    |

  4. A wave is represented by the equation y=0.1 sin (100pit-kx) If wa...

    Text Solution

    |

  5. Identify the operation performed by the circuit as shown in the figure...

    Text Solution

    |

  6. What is the potential difference between the points A and B in the cir...

    Text Solution

    |

  7. By a change of current from 5 A to 10 A in 0.1 s, the self induced em...

    Text Solution

    |

  8. Two identical capacitors 1 and 2 are connected in series to a batery a...

    Text Solution

    |

  9. A square frame of side l carries a current produces a field B at its c...

    Text Solution

    |

  10. A uniform wire of resistance 36 Omega is bent in the form of a circle....

    Text Solution

    |

  11. A ray of light falls on a transparent sphere with centre at C as shown...

    Text Solution

    |

  12. A current of 3 A flows through the 2 Omega resistor as shown in the ci...

    Text Solution

    |

  13. What is orbital angular momentum of an electron in 3d orbital.

    Text Solution

    |

  14. Two identical magnetic dipoles of magnetic moments 1*0Am^2 each are pl...

    Text Solution

    |

  15. Current flows through uniform square frames as shown. In which case is...

    Text Solution

    |

  16. The conducting circular loops of radii R(1) and R(2) are placed in the...

    Text Solution

    |

  17. In Young’s double slit experiment, the intensity of light coming from ...

    Text Solution

    |

  18. Let v(1) be the frequency of series limit of Lyman series, v(2) the fr...

    Text Solution

    |

  19. The focal length of a biconvex lens of refractive index 1.5 is 0.06m. ...

    Text Solution

    |

  20. A metallic surface is irradiated by a monochromatic light of frequency...

    Text Solution

    |