Home
Class 12
PHYSICS
The earth's magnetic field at a given po...

The earth's magnetic field at a given point is `0.5xx10^(-5) Wb-m^(-2)`. This field is to be annulled by magnetic indcution at the centre of a circular conducting loop of radius `5.0 cm`. The current required to be flown in the loop is nearly

A

`0.2A`

B

`0.4A`

C

`4A`

D

`40A`

Text Solution

Verified by Experts

The correct Answer is:
B
Promotional Banner

Topper's Solved these Questions

  • KINETIC THEORY OF GASES

    ERRORLESS |Exercise QUESTIONS|126 Videos

  • MAGNETISM

    ERRORLESS |Exercise Assertion & Reason|1 Videos

Similar Questions

Explore conceptually related problems

The earth's magnetic induction at a certain point is 7xx10^(-5) Wb/m^(2) . This is to be annulled by the magnetic induction at the centre of a circular conducting loop of radius 5 cm . The required current in the loop is

The earth's magnetic field at a certain point is 0.70 gauss. This field is to be annulled by the magnetic field at the centre of a circular conducting loop 5.0 cm in radius. The required current is about

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

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 loop of radius 12.3 cm is 6.4 xx 10^(-6) T. What will be the magnetic moment of the loop?

ERRORLESS -MAGNETIC EFFECT OF CURRENT-Exercise
  1. A long solenoid carrying a current produces a magnetic field B alon...

    Text Solution

    |

  2. A long straight wire carrying current of 30 A is placed in an exte...

    Text Solution

    |

  3. The earth's magnetic field at a given point is 0.5xx10^(-5) Wb-m^(-2)....

    Text Solution

    |

  4. A coil having N turns carry a current I as shown in the figure. The ma...

    Text Solution

    |

  5. Two similar coils are kept mutually perpendicular such that their cent...

    Text Solution

    |

  6. In the figure, what is the magnetic field at the point O?

    Text Solution

    |

  7. The magnetic dipole moment of a current loop, carrying current I, havi...

    Text Solution

    |

  8. A current flows in a conductor from east to west. The direction of the...

    Text Solution

    |

  9. A long wire carries a steady curent . It is bent into a circle of one ...

    Text Solution

    |

  10. The magnetic field due to a current carrying loop of radius 3 cm at a...

    Text Solution

    |

  11. The current is flowing in south direction along a power line. The dire...

    Text Solution

    |

  12. Two wires of same length are shaped into a square and a circle. If the...

    Text Solution

    |

  13. An electron is revolving round a proton, producing a magnetic field of...

    Text Solution

    |

  14. Two concentric coils each of radius equal to 2 pi cm are placed at rig...

    Text Solution

    |

  15. A wire carrying current I and other carrying 2I in the sam direction p...

    Text Solution

    |

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

    Text Solution

    |

  17. The direction of magnetic field lines due to straight conductor carryi...

    Text Solution

    |

  18. For the magnetic field to be maximum due to a small element of current...

    Text Solution

    |

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

    Text Solution

    |

  20. A uniform magnetic field and a uniform electric field are produced, po...

    Text Solution

    |