Home
Class 12
PHYSICS
An electron moves in a circular orbit wi...

An electron moves in a circular orbit with a uniform speed `v`.It produces a magnetic field `B` at the centre of the circle. The radius of the circle is proportional to

A

`sqrt(B/v)`

B

`B/v`

C

`sqrt(v/B)`

D

`v/B`

Text Solution

Verified by Experts

The correct Answer is:
D

` r = (mv)/(qB) implies prop v/B`
Promotional Banner

Topper's Solved these Questions

  • MOVING CHARGES AND MAGNETISM

    DISHA PUBLICATION|Exercise EXERCISE - 1 : Concept Builder (Topic wise) (Topic 2 : Magnetic Field Lines, Biot - Savart.s Law and Ampere.s Circuital Law|21 Videos
  • MOVING CHARGES AND MAGNETISM

    DISHA PUBLICATION|Exercise EXERCISE - 1 : Concept Builder (Topic wise) (Topic 3 : Force and torque on current carrying conductor and moving coil Galvanometor )|14 Videos
  • MOVING CHARGES AND MAGNETISM

    DISHA PUBLICATION|Exercise EXERCISE - 2 : Concept Applicator|25 Videos
  • MOTION IN A STRAIGHT LINE

    DISHA PUBLICATION|Exercise Exercise-2|30 Videos
  • NUCLEI

    DISHA PUBLICATION|Exercise EXERCISE - 2 (CONCEPT APPLICATOR)|30 Videos

Similar Questions

Explore conceptually related problems

An electron moving in a circular orbit of radius R with frequency f . The magnetic field at the centre of the orbit is

A 2 muC charge moving around a circle with a frequency of 6.25xx10^(12) Hz produces a magnetic field 6.28 tesla at the centre of the circle. The radius of the circle is

A charge 'e' moves round a circle of radius 'r' with a uniform speed 'v' . The magnitude of the magnetic induction at the centre of the circle is

The magnetic field produced at the centre of circular coil is directly proportional to ______________.

The magnetic field produced at the centre of circular coil is directly proportional to ______________.

An electron moves in circular orbit of radius r with constant speed v.The force acting in it is

In a homogeneous magnetic field B there is an electron moving in a circular orbit with a speed v. Find the ratio of the magnetic field generated by the moving electron at the middle of the circle and the magnetic field making it revolve.

DISHA PUBLICATION-MOVING CHARGES AND MAGNETISM -EXERCISE - 1 : Concept Builder (Topic wise) (Topic 1 : Motion of Charged Particle in Magnetic Field )
  1. The magnetic force action on a charged particle of charge -2muC in a m...

    Text Solution

    |

  2. A charged paricle goes undeflected in a region containing electric an...

    Text Solution

    |

  3. An electron having a charge c moves with a velocity v in X - direction...

    Text Solution

    |

  4. A thin circular wire carrying a current I has a magnetic moment M. The...

    Text Solution

    |

  5. You are given a closed circuit with radii a and b as shown in fig carr...

    Text Solution

    |

  6. An electron moves in a circular orbit with a uniform speed v.It produc...

    Text Solution

    |

  7. A proton moving with a velocity 3xx10^(5)m//s enters a magnetic field ...

    Text Solution

    |

  8. A beam of electrons is moving with constant velocity in a region havin...

    Text Solution

    |

  9. A uniform magnetic field at right angles to the direction of motion of...

    Text Solution

    |

  10. A proton moving with a constant velocity passes through a region of sp...

    Text Solution

    |

  11. A charge particle (charge q ) is moving in a circle of radius R with u...

    Text Solution

    |

  12. A charge particle moves with velocity vecV=Ahati+Dhatj magnetic field ...

    Text Solution

    |

  13. If particle of charge 10^(-12) coulomb moving along the hatx - directi...

    Text Solution

    |

  14. A certain region has an electric field vecE = (2hati-3hatj) N/C and a...

    Text Solution

    |

  15. A cathode ray beam is bent in a circle of radius 2 cm by a magnetic in...

    Text Solution

    |

  16. An electron moving with kinetic energy 6xx10^(-16) joules enters a fie...

    Text Solution

    |

  17. A wire of length L metre , carrying a current I ampere is bent in the...

    Text Solution

    |

  18. What is cyclotron frequency of an electron with an energy of 100 eV in...

    Text Solution

    |

  19. A charged particle with a velocity 2xx10^(3) ms^(-1) passes undeflecte...

    Text Solution

    |

  20. A proton and an alpha-particle enter a uniform magnetic field moving w...

    Text Solution

    |