Home
Class 12
PHYSICS
A toroid with a circular cross-section h...

A toroid with a circular cross-section has a current I in its winding. The total number of windings is N. The total current through an Amperian loop of radius r equal to the mean radius of the toroid is

A

ZERO

B

I

C

NI

D

`(NI)/(2piR)`

Text Solution

Verified by Experts

Promotional Banner

Topper's Solved these Questions

  • Magnetic Fields due to Electric Current

    CHETANA PUBLICATION|Exercise Exercise|96 Videos

  • Kinetic Theory of Gases and Radiation

    CHETANA PUBLICATION|Exercise Exercise|110 Videos

  • Magnetic Materials

    CHETANA PUBLICATION|Exercise EXERCISE|74 Videos

Similar Questions

Explore conceptually related problems

The magnetic moment of a current carrying loop whose circumference with radius 'r' is equal to the perimeter of square with length / is

If in circular coil of radius R , current I is flowing and in another coil B of radius 2R a current 2I is flowing , then the raatio of the magnetic fields B_(A) and B_(B) , produced by them will be

A circular coil of radius R carries a current i . The magnetic field at its centre is B . The distance from the centre on the axis of the coil where the magnetic field will be B//8 is

The magnetic moment of a current (i) carrying circular coil of radius (r) and number of turns (n) varies as

A wire of length l, carrying current i, is bent in circle of radius r, then magnetic moment at centre of loop is

Answer the following questions : With a neat labelled diagram, describe the pattern of magnetic lines of force due to a current through a circular loop. Also explain how the magnetic field depends on the number of turns (n) in the loop.

The number of turns in a circular coil of wire is 10 and average radius of each turn is 8 cm. A current of 5A is passed through the coil. Find the magnetic induction due to the current at a point at a distance of 6 cm on the axis of the coil from the centre.

A circular loop of radius r having N number of turns carries current I is placed in a placed in a uniform magnetic field vecB parallel to the plane of the loop. The torque on the loop is :

A winding wire which is used to prepare a solenoid of length 80 cm can bear a maximum cuurent of 10 A. the cross-sectional radius of the solenoid is 3 cm. what should be the length of the winding wire if a magnetiic field of 0.2 T is to be produced at the centre of the solenoid along its axis?

CHETANA PUBLICATION-Magnetic Fields due to Electric Current-Exercise
  1. A solenoid of length 1.5 m and diameter 4 cm has 10 turns per meter. A...

    Text Solution

    |

  2. A very long solenoid has 8400 winding and a length of 7m. If the field...

    Text Solution

    |

  3. A toroid with a circular cross-section has a current I in its winding....

    Text Solution

    |

  4. Cyclotron can not accelerate

    Text Solution

    |

  5. If a particle of charge q is moving with a velocity v in a direction o...

    Text Solution

    |

  6. A conductor of length lm and carrying current of 1A is placed at an an...

    Text Solution

    |

  7. The maximum force acting on a straight conductor of length 15 cm place...

    Text Solution

    |

  8. A force of 1.732 xx 10^-2 N acts on a particle of charge moving with a...

    Text Solution

    |

  9. The force acting on a particle of charge q moving in a uniform magnets...

    Text Solution

    |

  10. In Bohr's model if hydrogen atom, the electron circulates around nucle...

    Text Solution

    |

  11. Two circular coils are made of two identical wires of same length. If ...

    Text Solution

    |

  12. A circular coil having 50 turns each of radius 0.05 m carries a curren...

    Text Solution

    |

  13. The ratio of magnetic induction at a point along the axis of a circula...

    Text Solution

    |

  14. A square coil of side 10 cm consists of 20 turns and carries 12 A. The...

    Text Solution

    |

  15. Two long and straight conductors, placed parallel to each other are se...

    Text Solution

    |

  16. The magnetic moment of a square coil having 5 turns, each side measuri...

    Text Solution

    |

  17. A long straight wire carries a current of 50 A. An electron moving at ...

    Text Solution

    |

  18. The magnetic induction at a point on the axis of a circular current ca...

    Text Solution

    |

  19. Choose the correct option:- Cyclotron cannot accelerate

    Text Solution

    |

  20. Choose the correct option:- The magnetic field at a distance 'r' from ...

    Text Solution

    |