Home
Class 12
PHYSICS
A wire fo length l is bent in the from ...

A wire fo length l is bent in the from of a circular coil of some turns . A current i flow thoughteh coil . The coil is placed in a unifrom magnetic field B . The maxffimum troque on the coil can be

A

zero

B

`iBI^2`

C

`4 pi I BI^2`

D

`(iI^2 B)/( 4 pi)`

Text Solution

Verified by Experts

The correct Answer is:
D
Promotional Banner

Topper's Solved these Questions

  • APPENDICES ( REVISION EXERCISE )

    AAKASH SERIES|Exercise REVISION EXERCISE (MAGNETISM AND MATTER )|52 Videos
  • APPENDICES ( REVISION EXERCISE )

    AAKASH SERIES|Exercise REVISION EXERCISE (CUTTENT ELECTRICITY )|108 Videos
  • ALTERNATING CURRENT

    AAKASH SERIES|Exercise EXERCISE - III|24 Videos
  • APPENDICES (REVISION EXERCISE)

    AAKASH SERIES|Exercise LAW OF MOTION|128 Videos

Similar Questions

Explore conceptually related problems

A wire of length l is bent in the form a circular coil of some turns. A current I flows through the coil. The coil is placed in a uniform magnetic field B. The maximum torqur on the coil can be

A current I flows in a circular coil of radius r. If the coil is placed in a uniform magnetic field B with its plane parallel to the field, magnitude of the torque that acts on the coil is

A circular coil having N turns and radius r carries a current I. It is held in the XZ plane in a magnetic field Bhati . The torque on the coil due to the magnetic field is :

A circular coil having N turns and radius r carries a current I. It is held in the XZ plane in a magnetic field Bhati . The torque on the coil due to the magnetic field is :

A circular coil having N turns is made from a wire of length L meter. If a current I ampere is passed through it and is placed in amagnetic field of B Tesla, the maximum torque on it is

A circular coil of radius 1*5 cm carries a current of 1*5A . If the coil has 25 turns , find the magnetic field at the centre.

To double the torque acting on a coil of n-turns, when placed in a magnetic field

A steady current flows in a long wire. It is bent into a circular lopp of one turn and the magnetic field at the centre of the coil is B. If the same wire is bent into a circular loop of n turns, the magnetic field at the centre of the coil is

A long wire carries a steady curent . It is bent into a circle of one turn and the magnetic field at the centre of the coil is B . It is then bent into a circular loop of n turns. The magnetic field at the centre of the coil will be

A long wire carries a steady curent . It is bent into a circle of one turn and the magnetic field at the centre of the coil is B . It is then bent into a circular loop of n turns. The magnetic field at the centre of the coil will be

AAKASH SERIES-APPENDICES ( REVISION EXERCISE )-REVISION EXERCISE (MOVING CHANGES & MEGNETISM)
  1. Three long straight and parallel wires carrying currents are arranged ...

    Text Solution

    |

  2. Two parallel horizontal conductors are suspended by two light vertical...

    Text Solution

    |

  3. Along wire carrying a current of 40A as shown in figure. The rectangul...

    Text Solution

    |

  4. Two long parallel wires are at a distance 2d apart. They carry steady ...

    Text Solution

    |

  5. A conducting ring of mass 2kg, radius 0.5m carries a current of 4A. I...

    Text Solution

    |

  6. A wire fo length l is bent in the from of a circular coil of some tur...

    Text Solution

    |

  7. A rectangular coil 6 cm long and 2 cm wide is placed in a magnetic fie...

    Text Solution

    |

  8. A circular coil of 20 turns and radius 10 cm is placed in uniform magn...

    Text Solution

    |

  9. A moving coil galvanometer 'A' has 200 turns and a resistance of 100Om...

    Text Solution

    |

  10. A tangent galvanometer has 66 turns and the diameter of its coil is 22...

    Text Solution

    |

  11. A galvanometer has a resistance of 3663Omega. A shunt S is connected a...

    Text Solution

    |

  12. A galvanometer having a resistance of 50Omega, gives a full scale defl...

    Text Solution

    |

  13. A galvanometer has a resistance G and current I(a) flowing in it. Prod...

    Text Solution

    |

  14. The deflection of a galvanometer falls to 1//10^(th) when a resistanc...

    Text Solution

    |

  15. A moving coil galvanometer has 150 equal divisions. Its current sensit...

    Text Solution

    |

  16. A straight rod of mass m and lenth L is suspended from the identical s...

    Text Solution

    |

  17. A rigid circular loop of radius r and mass m lies in the xy-plane on a...

    Text Solution

    |

  18. In the circuit diagrams (A,B,C and D) shown below, R is a high resista...

    Text Solution

    |

  19. To find the resistance of a galvanometer by the half deflection method...

    Text Solution

    |

  20. Deflection of galvanometer in the circuit is 71 divisions. A shunt of...

    Text Solution

    |