Home
Class 12
PHYSICS
The magnetic field at the centre O of th...

The magnetic field at the centre `O` of the circular portion of radius `3 cm` carrying current 4 ampere in the wire is

A

`(8pi//3)xx10^(-5)T`

B

`(8pi//3)xx10^(-4)T`

C

`2pixx10^(-5)T`

D

`2pixx10^(-4)T`

Text Solution

Verified by Experts

The correct Answer is:
c
`B=(3pi//2)/(2pi)xx(mu_(0)I)/(2R)`
Promotional Banner

Topper's Solved these Questions

  • MOVING CHARGES AND MAGNETISM

    NARAYNA|Exercise LEVEL-VI (SINGLE ANSWER QUESTION)|81 Videos

  • MOVING CHARGES AND MAGNETISM

    NARAYNA|Exercise Level =I (H.W)|42 Videos

  • MOVING CHARGES AND MAGNETISM

    NARAYNA|Exercise NCERT Based Questions|20 Videos

  • MAGNETISM AND MATTER

    NARAYNA|Exercise EXERCISE - 4 (SINGLE ANSWER TYPE QUESTION)|17 Videos

  • NUCLEAR PHYSICS

    NARAYNA|Exercise LEVEL-II-(H.W)|9 Videos

Similar Questions

Explore conceptually related problems

the intensity of the magnetic induction field at the centre of a single turn circular coil of radius 5 cm carrying current of 0.9 A is

The magnetic field at the centre of a circular coil carrying current I ampere is B. It the coil is bent into smaller circular coil of n turns then its magnetic field at the centre is B, the ratio between B' and B is

The magnitude of the magnetic field at the centre of the tightly wound 150 turn coil of radius 12 cm carrying a current of 2 A is

What is the magnetic induction at the centre of a circular coil of 10 turns, each of radius 5 cm and carrying a current of 5 A ?

A long wire is bent as shown in Fig. what will be the magnitude and direction of the field at the centre O of the circular portion, if a current I is passed through the wire ? Assume that the various portions of the wire do not touch at point P.

What will be magnetic field at centre of current carrying circular loop of radius R?

NARAYNA-MOVING CHARGES AND MAGNETISM-LEVEL-V (SINGLE ANSWER QUESTION)
  1. Two parallel, long wires carry current i(1) and i(2) withi(1)gti(2). W...

    Text Solution

    |

  2. Magnetic field B along the axis of a long solenoid is given by

    Text Solution

    |

  3. The magnetic field at the centre O of the circular portion of radius 3...

    Text Solution

    |

  4. An infinitely long conductor PQR is bent to form a light angle as sho...

    Text Solution

    |

  5. A long current wire is bent in the shapes shown in figure. The circula...

    Text Solution

    |

  6. An ionized gas contains both positive and negative ions . If it is sub...

    Text Solution

    |

  7. A charged particle is released from rest in a region of steady and uni...

    Text Solution

    |

  8. A charged particle of mass m and charge q enters a magnetic field B wi...

    Text Solution

    |

  9. A particle of mass m and charge q is projected into a region having a ...

    Text Solution

    |

  10. A charged particle having charge 10^-6 C and mass of 10^-10 kg is fire...

    Text Solution

    |

  11. A particle moves in a circle of diamater 1.0 cm under the action of ma...

    Text Solution

    |

  12. A proton , a deutron and alpha )- particle having the same kinetic en...

    Text Solution

    |

  13. A proton of mass 1.67xx10^(-27)kg and charge 1.6xx10^(-19)c is projec...

    Text Solution

    |

  14. For a positively charged particle moving in a x-y plane initially alon...

    Text Solution

    |

  15. An electron moving with a speed u along the positive x-axis at y=0 ent...

    Text Solution

    |

  16. A uniform magnetic field is directed out of the page. A charged partic...

    Text Solution

    |

  17. There is a horizontal cylindrical uniform but time-varying nagnetic fi...

    Text Solution

    |

  18. A charged particle of specific charge (charge/mass) alpha released fro...

    Text Solution

    |

  19. Consider the uniform magnetic field shown: Starting from point P ...

    Text Solution

    |

  20. Two charged plates A and B are at the same electrical potential, and p...

    Text Solution

    |