Home
Class 12
PHYSICS
Field at the centre of a circular coil o...

Field at the centre of a circular coil of radius `r`, through which a current `I` flows is

A

Directly proportional to `r`

B

Inversely proportional to `I`

C

Directly proportional to `I`

D

Directly proportional to `I^(2)`

Text Solution

Verified by Experts

The correct Answer is:
C
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

Magnetic field at the centre of a circular coil of radius R due to curent i flowing through it is B. The magnetic field at a point along the axis at distance R from the centre is :

The magnetic field at the centre of a circular coil of radius r carrying current l is B_(1) . The field at the centre of another coil of radius 2r carrying same current l is B_(2) . The ratio (B_(1))/(B_(2)) is

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

Ratio of magnetic field at the centre of a current carrying coil of radius R and at a distance of 3R on its axis is

What is the direction field at the centre of a circular coil carrying current in (i) anticlockwise direction (ii) clockwise direction?

How will the magnetic field induction at the centre of a circular coil carrying current change, if the current through the coil is doubled and the radius of the coil is halved?

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

ERRORLESS -MAGNETIC EFFECT OF CURRENT-Exercise
  1. The magnetic induction at apoint P which is at the distance 4 cm from ...

    Text Solution

    |

  2. The strength of the magnetic field at a point r near a long straight c...

    Text Solution

    |

  3. Field at the centre of a circular coil of radius r, through which a cu...

    Text Solution

    |

  4. A current of 0.1 A circulates around a coil of 100 turns and having a ...

    Text Solution

    |

  5. The magnetic field B with in the solenoid having n turns per metre len...

    Text Solution

    |

  6. The magnetic induction at the centre O in the figure shown in

    Text Solution

    |

  7. Field inside a solenoid is

    Text Solution

    |

  8. In the figure shown, the magnetic induction at the centre of the arc d...

    Text Solution

    |

  9. In the figure shown there are two semicircles of radii r(1) and r(2) i...

    Text Solution

    |

  10. The magnetic moment of a current carrying loop is 2.1xx10^(-25) ampxxm...

    Text Solution

    |

  11. Two straight horizontal parallel wires are carrying the same current i...

    Text Solution

    |

  12. A particle carrying a charge equal to 100 times the charge on an elect...

    Text Solution

    |

  13. A circular coil of radius R carries an electric current. The magnetic...

    Text Solution

    |

  14. In hydrogen atom, an electron is revolving in the orbit of radius 0.53...

    Text Solution

    |

  15. The magnetic induction due to an infinitely long straight wire carryin...

    Text Solution

    |

  16. Magnetic effect of current was discovered by

    Text Solution

    |

  17. Two concentric circular coils of ten turns each are situated in the sa...

    Text Solution

    |

  18. A long solenoid has a radius a and number of turns per unit length is ...

    Text Solution

    |

  19. A cell is connected between two points of a uniformly thick circular c...

    Text Solution

    |

  20. A long solenoid is formed by winding 20 turns cm^-1. What current is n...

    Text Solution

    |