Home
Class 12
PHYSICS
The current in the first orbit of Bohr's...

The current in the first orbit of Bohr's hydrogen atom is

A

0.01 mA

B

1 mA

C

2.63 mA

D

10 mA

Text Solution

Verified by Experts

The correct Answer is:
B
`I=(ev)/(2pi r)`
`=(1.6xx10^(-19)xx2.18xx10^(6))/(2xx3.14xx0.53xx10^(-10))`
`=1 mA`
Promotional Banner

Topper's Solved these Questions

  • CIRCULAR MOTION

    NIKITA PUBLICATION|Exercise Multiple Choice Question|421 Videos

Similar Questions

Explore conceptually related problems

What is the approximate value of the current in the first orbit of bohr's hydrogen atom ? (Radius of the first orbit = 0.5 Å and speed of the electron in the first orbit =2xx10^6 m//s )

The kinetic energy of electron in the first Bohr orbit of the hydrogen atom is

What is the orbital acceleration of the electron in the first bohr orbit of hydrogen atom ?

Calculate the velocity of an electron in the first Bohr orbit of a hydrogen atom

If the speed of electron in the first bohr orbit of hydrogen atom is x then the speed of the electron in the third Bohr orbit of hydrogen is

Calculate the frequency of revolution of electron in the first Bohr orbit of hydrogen atom, if radius of first Bohr orbit is 0.5Å and velocity of electron in the first orbit is 2.24xx10^6m//s .

The radius of the first Bohr orbit of hydrogen atom is 0.529Å . The radius of the third orbit of H will be:

NIKITA PUBLICATION-ATOMS, MOLECULES AND NUCLEI-MCQs
  1. Which of the following transitions give the highest frequency for elec...

    Text Solution

    |

  2. The magnetude of the P.E. of the electron in the first orbit of the Bo...

    Text Solution

    |

  3. The current in the first orbit of Bohr's hydrogen atom is

    Text Solution

    |

  4. The radii of Bohr's orbit are directly proportional to

    Text Solution

    |

  5. The ratio of magnetic dipole moment to angular momentum of electron is

    Text Solution

    |

  6. The force of repulsion between two electrons kept at a distance of 1 ...

    Text Solution

    |

  7. If the velocity of an electron in its first orbit of hydrogen atom is ...

    Text Solution

    |

  8. The de Broglie wavelenth of 1 mg grain of sand blown by a 20 m s^-1 wi...

    Text Solution

    |

  9. For the Bohr's first orbit of circumference 2pi r , the de - Broglie ...

    Text Solution

    |

  10. If an electron is revolving around the hydrogen nucleus at a distance ...

    Text Solution

    |

  11. Which of the following series in the spectrum of the hydrogen atom lie...

    Text Solution

    |

  12. If the electron in a hydrogen atom jumps from an orbit with level n(1)...

    Text Solution

    |

  13. In hydrogen atom, the electron is making 6.6xx10^(15) rev//sec around ...

    Text Solution

    |

  14. The radius of hydrogen atom in its ground state is 5.3 xx 10^(-11)m. A...

    Text Solution

    |

  15. The orbital frequency of an electron in the hydrogen atom is proportio...

    Text Solution

    |

  16. Balmer series of hydrogen atom lies in

    Text Solution

    |

  17. The de-Broglie wavelength of an electron in the ground state of the hy...

    Text Solution

    |

  18. The acceleration of electron in Bohr's 1^(st) orbit is given by

    Text Solution

    |

  19. An electron moves in Bohr's orbit. The magnetic field at the centre is...

    Text Solution

    |

  20. The de-Broglie's wavelength in 1^(st) Bohr's orbit is

    Text Solution

    |