Home
Class 11
PHYSICS
If in circular coil of radius R, current...

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

1

B

2

C

`1//2`

D

4

Text Solution

Verified by Experts

Promotional Banner

Topper's Solved these Questions

Similar Questions

Explore conceptually related problems

A circular coil of N turns and radius R carries a current I. It is unwound and rewound to make another coil of radius R//2. Current I remaining the same. Calculate the ratio of the magnetic moments of the new coil and the original coil.

A circular coil 'A' has a radius R and the current flowing through it is I.Another circular coil 'B' has a radius 2R and if 2I is the current flowing through it then the magnetic fields at the centre of the circular coil are in the ratio of

A circular coil 'A' has a radius R and the current flowing through it is I.Another circular coil 'B' has a radius 2R and if 21is the current flowing through it then the magnetic fields at the centre of the circular coil are in the ratio of

A circular coil 'A' has a radius R and the current flowing through it is I.Another circular coil 'B' has a radius 2R and if 21is the current flowing through it then the magnetic fields at the centre of the circular coil are in the ratio of

A current I is flowing in an octagonal coil of side a figure. The magnetic field induction at the centre O of the coil will be

A circular coil of radius r is fromed by wire of length L.If current I is flowing through it then the magnetic moment Is proportional to

A circular coil of radius r carries a current I. The magnetic field at its centre is B. At what distance from the centre, on the axis of the coil the magneitc field will be B/27 ?

DISHA-MOVING CHARGES AND MAGNETISM-PHYSICS
  1. A long solenoid carrying a current produces a magnetic field B alon...

    Text Solution

    |

  2. A particle of charge q and mass m moves in a circular orbit or radius ...

    Text Solution

    |

  3. A current loop in a magnetic field

    Text Solution

    |

  4. Two long parallel wires P and Q are both perpendicular to the plane of...

    Text Solution

    |

  5. A very long straight wire carries a current I. At the instant when a c...

    Text Solution

    |

  6. Two wires with currents 2A and 1A are enclosed in a circular loop. Ano...

    Text Solution

    |

  7. If in circular coil of radius R, current I is flowing and in another c...

    Text Solution

    |

  8. A charged particle moves through a magnetic field perpendicular to its...

    Text Solution

    |

  9. The deflection in a galnometer falls from 50 divisions to 20 divisions...

    Text Solution

    |

  10. When a long wire carrying a steady current is best into a circular coi...

    Text Solution

    |

  11. The magnetic field due to a current carrying circular loop of radius 3...

    Text Solution

    |

  12. A charge moving with veloity V in X direction is subjected to a field...

    Text Solution

    |

  13. An electron travelling with a spped u along the positive x-axis enters...

    Text Solution

    |

  14. If an ammeter is to be used in place of a voltmeter, then we must conn...

    Text Solution

    |

  15. An infinite straigh conductor carrying current 2 I is split into a loo...

    Text Solution

    |

  16. Four wires each of length 2.0 meters area bent into four loops P,Q,R a...

    Text Solution

    |

  17. A square loop, carrying a steady 1, is placed in a horizontal plane n...

    Text Solution

    |

  18. Two coaxial solenoids of different radius carry current I in the same ...

    Text Solution

    |

  19. The AC voltage across a resistance can be measured using

    Text Solution

    |

  20. When a charged particle moving with velocity vec(V) is subjected to a...

    Text Solution

    |