Home
Class 12
PHYSICS
Calculate the relaxation time of electro...

Calculate the relaxation time of electron in previous problem. Given mass of electron is `9.1 xx10^(-31) kg`.

Text Solution

Verified by Experts

`1.37xx10^(-17)s`
Promotional Banner

Topper's Solved these Questions

  • CURRENT ELECTRICITY

    MODERN PUBLICATION|Exercise CONCEPTUAL QUESTIONS|35 Videos

  • CURRENT ELECTRICITY

    MODERN PUBLICATION|Exercise TOUGH AND TRICKY PROBLEMS|23 Videos

  • CURRENT ELECTRICITY

    MODERN PUBLICATION|Exercise Chapter Practice Test|15 Videos

  • ATOMS

    MODERN PUBLICATION|Exercise Chapter Practice Test|16 Videos

  • DUAL NATURE OF RADIATION AND MATTER

    MODERN PUBLICATION|Exercise CHAPTER PRACTICE TEST|15 Videos

Similar Questions

Explore conceptually related problems

Calculate the equivalent energy of electrons and proton at rest. Given that mass of electron =9.1xx10^(-31)kg and mass of proton =1.673xx10^(-27)kg .

Radius of the fourth orbit in hydrogen atom is 0.85 nm. Calculate the velocity of the electron in this orbit (mass of electron = 9.1 xx 10^(-31) kg) .

The mass of half mole of electrons is about (Given: Mass of electron =9.1 xx10^(-28) g)

Find the relaxation time for free electrons in copper, if the density of mobile electrons is 8.4 xx10^(28) m^(-3) . The resistivity of copper at room temperature is 1.7xx10^(-8)Omega m . Given : mass of electron =9.11 xx10^(-31) kg and charge on electron =1.6xx10^(-19)C .

If the entire mass of the body (45.5 kg) is assumed to be made up of electrons, how many electrons are present in mass of an electron is 9.1 xx 10^(-31) kg ?

Calculate the change in mass of an object if 800 electrons are given to it Given: Mass of an electron is 9.1xx10^(-31) kg .

Electron density in a copper wire is 8.0 xx10^(22) cm ^(-3) . Calculate the relaxation time for electrons if the resistivity of copper is 1.68xx10^(-8) Omega m at room temperature. (Massof electron is 9.1 xx10^(-31) kg .)

Determine the de Broglie wavelength of a proton, whose kinetice energy is equal to the rest of the mass energy of an electron. Given that the mass of an electron is 9xx10^(-31) kg and the mass of a proton is 1837 times as that of the electron.

What is the number of electrons that would weight 1 kg? Mass of an electron is 9.11 xx 10^-31 kg .

MODERN PUBLICATION-CURRENT ELECTRICITY-PRACTICE PROBLEMS
  1. Find the average drift velocity of electrons if a wire of cross sectio...

    Text Solution

    |

  2. Find the average drift wire with area of cross section 0.01 cm^2 ,conn...

    Text Solution

    |

  3. Calculate the relaxation time of electron in previous problem. Given m...

    Text Solution

    |

  4. Six identical resistance of resistance 20 Omega each are connected in ...

    Text Solution

    |

  5. Calculate the effective resistance for the given combination between t...

    Text Solution

    |

  6. Three identical resistances of 2 Omega are connected through a metalli...

    Text Solution

    |

  7. Given the resistances of 1 Omega, 2 Omega and 3 Omega . How will you ...

    Text Solution

    |

  8. A parallel combination of three resistors takes a current of 5 A from ...

    Text Solution

    |

  9. Write the sequence of coloours in a carbon resistor having resistance ...

    Text Solution

    |

  10. Calculate the voltage across a colour-coded carbon resistor with colou...

    Text Solution

    |

  11. The resistance of a colour-coded carbon resistance is 670 Omega . Fin...

    Text Solution

    |

  12. Three resistors with conductanes G1 , G2 and G3 are connected as shown...

    Text Solution

    |

  13. In the previous problem, calculate the effective conductance if all th...

    Text Solution

    |

  14. A wire of uniform cross section of resistance 16 Omega is divided into...

    Text Solution

    |

  15. Calculate the electric power of an electric bulb of resistance 400 Ome...

    Text Solution

    |

  16. An electric pump of 0.8 hp is used in water supply system in a house. ...

    Text Solution

    |

  17. In the previous problem, calculate the units of energy consumed per da...

    Text Solution

    |

  18. Calculate the resistance of an electric heater of 1 kW if it operates ...

    Text Solution

    |

  19. In the previous problem, calculate the change in power taken by electr...

    Text Solution

    |

  20. Calculate the percentage change in power of an electric heater if the ...

    Text Solution

    |