Home
Class 12
PHYSICS
Potential difference of 100 V is applied...

Potential difference of 100 V is applied to the ends of a copper wire one metre long. Calculate the average drift velocity at `27^@ C` . Assume that there is one conduction electron per atom. The density of copper is `9.0xx10^3 kg//m^3` , Atomic mass of copper id 63.5 g. Avogadro's number `=6.0xx10^(23)` per gram- mole. Conductivity of copper is `5.81xx10^(7) Omega^(-1)` . Boltzmann constant `=1.38xx10^(-23) JK^(-1)` .

Text Solution

AI Generated Solution

To solve the problem, we need to calculate the average drift velocity of conduction electrons in a copper wire when a potential difference is applied. Here are the steps to arrive at the solution: ### Step 1: Calculate the number density of conduction electrons (n) Given: - Atomic mass of copper (M) = 63.5 g/mol - Density of copper (ρ) = 9.0 × 10³ kg/m³ - Avogadro's number (N_A) = 6.0 × 10²³ atoms/mol ...
Promotional Banner

Topper's Solved these Questions

  • CURRENT ELECTRICITY

    AAKASH SERIES|Exercise EXERCISE (LONG ANSWER QUESTIONS)|12 Videos
  • CURRENT ELECTRICITY

    AAKASH SERIES|Exercise EXERCISE (SHORT ANSWER QUESTIONS)|12 Videos
  • COMMUNICATION SYSTEMS

    AAKASH SERIES|Exercise PRACTICE EXERCISE (TV Antenna)|16 Videos
  • CURRENT ELECTRICITY

    AAKASH SERIES|Exercise EXERCISE - IA|2 Videos

Similar Questions

Explore conceptually related problems

The Avogadro's number is 6.02xx10^(23) per gm mole and electronic charge is 1.6xx10^(-19) C . The Faraday's number is

A copper wire fo cross-sectional area 3.00xx10^(-6) m^2 carries a current 10.0A. a. Find the drift speed of the electrons in the wire. Assume that each copper atom contributes one free electron to the body of material. b. Find the average time between collisions for electrons in the copper at 20^@C. The density of copper si 8.95 gcm^(-1) , molar mass of copper is 63.5 gmol^(-1) , Avogadro number is 6.02x10^(23) electrons per mol and resistivity of copper is 1.7 xx10^(-8) Omegam.

Estimate the average drift speed of conduction electrons in a copper wire of cross-sectional area 2.0 xx 10^(-7)m^(2) carrying a current of 3.0 A. Assume that each copper atom contributes roughly one conduction electron. The density of copper is 9.0 xx10^(3) kg//m^(3) , and its atomic mass is 63.5 u.

A current of 1.34A exists in a copper wire of cross-section 1.0mm^(2) . Assuming eac copper atom contributes one free eectron. Calculate the drift speed of the free electrons in the wire. The density of copper is 8990 kg// m^(3) and atom ic mass=63.50.

Copper crystallises with face centred cubic unit cell . If the radius of copper atom is 127.8 pm , calculate the density of copper metal. (Atomic mass of Cu = 63.55 u and Avogadro's number N_(A) = 6.02 xx 10^(23) mol^(-1) )

A current of 1.0 A exists in a copper wore of cross-section 1.0mm^(2) . Assuming one free electron per atom calculate the drift speed of the free electrons in the wire. The density of copper is 9000kg m^(-3) .

You need to produce a set of cylindrical copper wires 2.5 m long that will have a resistance fo 0.125Omega each. What will be the mass of each of these wires? (Density of copper is 8.9xx10^3 kgm^(-3) and resistivity of copper is 1.72 xx10^(-8) OmegaM).

Copper has one conduction electron per atom. Its density is 8.89 g//cm^3 and its atomic mass. 63.54 g//mol . If a copper wire of diameter 1.0 mm carries a current of 2.0 A , what is the drift speed of the electrons in the wire?

Find the half life of U^(238) , if one gram of it emits 1.24xx10^4 alpha -particle per second. Avogadro's Number =6.023xx10^(23) .

The density of copper is 9xx10^3 kg m^(-3) and its atomic mass is 63.5 u. Each copper atom provides one free electron. Estimate the number of free electrons per cubic metre in copper.

AAKASH SERIES-CURRENT ELECTRICITY-PROBLEMS (LEVEL-II)
  1. Potential difference of 100 V is applied to the ends of a copper wire ...

    Text Solution

    |

  2. A battery of emf 10 V and internal resistance 3 Omega is connected to ...

    Text Solution

    |

  3. At room temperature (27.0 .^(@)C) the resistance of a heating element ...

    Text Solution

    |

  4. Determine the current in each branch of the network shown in figure.

    Text Solution

    |

  5. A storage battery of emf 8.0 V and internal resistance 0.5 Omega is be...

    Text Solution

    |

  6. Two wires of equal length, one of aluminium and the other of copper ha...

    Text Solution

    |

  7. (a) Given n resistors each of resistance R, how will you combine them ...

    Text Solution

    |

  8. Determine the equivalent resistance of networks shown in figures above

    Text Solution

    |

  9. Given the resistances 2 Omega , 3 Omega , 4 Omega how will you combine...

    Text Solution

    |

  10. The correct combination of three resistances 1Omega, 2Omega and 3Omega...

    Text Solution

    |

  11. Given the resistances 1 Omega , 2 Omega , 3 Omega how will you combine...

    Text Solution

    |

  12. (6//11) Omega

    Text Solution

    |

  13. Figure 6.13 shows a 2.0 V potentiometer used for the determination of ...

    Text Solution

    |

  14. The earth’s surface has a negative surface charge density of 10^(-9) C...

    Text Solution

    |

  15. Siix lead-acid type of secondary cells, each of emf 2.0 V and internal...

    Text Solution

    |

  16. A secondary cell after long use has an emf of 1.9 V and a large intern...

    Text Solution

    |

  17. Determine the current drawn from a 12V supply with internal resistance...

    Text Solution

    |

  18. Figure 6.36 shows a potentiometer with a cell of emf 2.0 V and interna...

    Text Solution

    |

  19. Figure 6.36 shows a potentiometer with a cell of emf 2.0 V and interna...

    Text Solution

    |

  20. Figure 6.36 shows a potentiometer with a cell of emf 2.0 V and interna...

    Text Solution

    |

  21. Figure 6.36 shows a potentiometer with a cell of emf 2.0 V and interna...

    Text Solution

    |