Home
Class 12
PHYSICS
A coil in the shape of an equilateral tr...

A coil in the shape of an equilateral triangle of side l is suspended between the pole pieces of a permanent magnet such that B fixed in plane of the coil if due to current I in the triangle a troque `gamma` acts on it then side of the triangle is

A

`(1)/sqrt(3)(r )/(b1)`

B

`(2)/sqrt(3)(r )/(b1)`

C

`(2)/sqrt(3)(r )/(bb1)^(1//2`

D

`(2)/sqrt(3)(r )/sqrt(3b1)^(1//2`

Text Solution

Verified by Experts

The correct Answer is:
D
Promotional Banner

Topper's Solved these Questions

  • MAGNETOSTATICS

    MODERN PUBLICATION|Exercise MULTIPLE CHOICE QUESTION (LEVEL III)|2 Videos

  • MAGNETOSTATICS

    MODERN PUBLICATION|Exercise RECENT COMPETITIVE QUESTION|5 Videos

  • MAGNETOSTATICS

    MODERN PUBLICATION|Exercise MULTIPLE CHOICE QUESTION (LEVEL I)(PARAGRAPH QUESTIONS )|1 Videos

  • LAWS OF MOTION

    MODERN PUBLICATION|Exercise Revision test|43 Videos

  • MOCK TEST-1

    MODERN PUBLICATION|Exercise MCQs|47 Videos

Similar Questions

Explore conceptually related problems

A coil in the shape of an equilateral triangle of side 0.02 m is suspended from a vertex such that it is hanging in a vertical plane between the pole pieces of a permanent magnetic producing a horizontal magnetic field of 5 xx 10^-2T . Find the torque acting on the coil when a current of 0.1 ampere is passed through it and the magnetic field is parallel to its plane.

The side of an equilateral triangle is shown by l. Express the perimeter of the equilateral triangle using l.

ABC is an equilateral triangle such that the vertices B and C lie on two parallel lines at a distance 6. If A lies between the parallel lines at a distance 4 from one of them, then the length of a side of the equilateral triangle is :

Find the perimeter of each of the following shapes: (b) An equilateral triangle of side 9 cm.

Balls are arranged in rows to form an equilateral triangle. The first row consists of one ball, the second row of two balls and so on. If 669 more balls are added,then all the balls can be arranged in the shape of a square and each of the sides, then contains 8 balls less than each side of the triangle. Determine the initial number of balls.

A current carrying loop of radius r carries a current I . It is placed in a magnetic field B_0 such that the plane of the coil is perpendicular to the magnetic field. The net force on the coil is

The charges Q, +q and + q are placed at the vertices of an equilateral triangle of side l . If the net electrostatic potential energy of the system is zero , the Q is equal to

MODERN PUBLICATION-MAGNETOSTATICS-MULTIPLE CHOICE QUESTION (LEVEL II)
  1. The real angle of dip if a magnet is suspended at an angle of 30^(@) ...

    Text Solution

    |

  2. Two short bar magnets of magnetic moment M each are arranged at the o...

    Text Solution

    |

  3. A coil in the shape of an equilateral triangle of side l is suspended...

    Text Solution

    |

  4. A bar magnet 20 cm in length is placed with its south pole towards g...

    Text Solution

    |

  5. The relative permeability is represented by mur and the susceptibility...

    Text Solution

    |

  6. If the anglular momentum of an electron is J then the magnitude of...

    Text Solution

    |

  7. Liquid oxygen remains suspeded two poles of a magnet because it is

    Text Solution

    |

  8. When a pieace of a ferromagnetic substance is put a uniform magnetic f...

    Text Solution

    |

  9. Two identical magnetic dipoles of magnetic moments 1.0 Am^(2) each pla...

    Text Solution

    |

  10. Tow identical short bar magnets each having magnetic moment m are pla...

    Text Solution

    |

  11. Two small magnets each of magnetic moment 10 Am^2 are placed in end on...

    Text Solution

    |

  12. A short bar magnet with its nroth pole facing north forms a neutral p...

    Text Solution

    |

  13. A bar magnet has coercivity 4xx10^(3) Am^(-1) it is desired to demagn...

    Text Solution

    |

  14. Some equipotential surface of the magnetic scalar potential are magn...

    Text Solution

    |

  15. The illustrates how B the flux density inside a sample of unmagnetised...

    Text Solution

    |

  16. A compass needle of magnetic moment 60 Am^(2) pointing geopgraphica...

    Text Solution

    |

  17. An electron moving aroung the nucleus with an angular momentum l h...

    Text Solution

    |

  18. A toroid of n turns mean radius R and sectional radius a carriers c...

    Text Solution

    |

  19. The magnetic field of earth can be modelled by that of a point placed...

    Text Solution

    |

  20. A paramagentic sample shows a net magnetization of 8 Am^(-1) when ...

    Text Solution

    |