Home
Class 12
PHYSICS
A magnet when placed perpendicular to a ...

A magnet when placed perpendicular to a uniform field of strength `10^(-4)Wb//m^(2)` experiences a mximum couple of moment `4xx10^(-5)N//m`. What is its magnetic moment?

A

`0.4Axxm^(2)`

B

`0.2Axxm^(2)`

C

`0.16Axxm^(2)`

D

`0.04Axxm^(2)`

Text Solution

Verified by Experts

The correct Answer is:
A
`tau_(max)=MBimplies4xx10^(-5) =Mxx10^(-4) impliesM=0.4Axxm^(2)`
Promotional Banner

Topper's Solved these Questions

  • MAGNETISM AND MATTER

    A2Z|Exercise Magnetic Equipments|58 Videos

  • MAGNETISM AND MATTER

    A2Z|Exercise Magnetic Materials|50 Videos

  • GEOMETRICAL OPTICS

    A2Z|Exercise Section D - Chapter End Test|30 Videos

  • MOCK TEST

    A2Z|Exercise Mock Test 3|44 Videos

Similar Questions

Explore conceptually related problems

A bar magnet when suspended horizontally and perpendicular to earth's field experiences a torque of 3xx10^-4Nm . What is the magnetic moment of the magnet? Horizontal component of earth's magnetic field at that place is 0*4xx10^-4tesla .

A bar magnet placed in a uniform magnetic field of strength 0*3T with its axis at 30^@ to the field experiences a torque of 0*06N-m . What is the magnetic moment of the bar magnet?

A bar magnet when placed at an angle of 30^(@) to the direction of magnetic field of 5xx10^(-2) T, experiences a moment of couple 2.5xx10^(-6) . If the length of the magnet is 5cm, then what will be its pole strength?

A bar magnet of magnetic mament 3 Am^(2) is placed in a uniform magnetic induction of 2xx10^(-2) T experiences a troque of 25xx10^(-6) N-m what is its poles strenght if the imagnetic length of the magnet is 5 cm ?

A short bar magnet placed with its axis at 30^@ with a uniform external magnetic field of 0*25T experiences a torque of magnitude equal to 4*5xx10^-2J . What is the magnitude of magnetic moment of the magnet?

A conductor of length 2m, carrying a current of 10 A is kept in a magnetic field of induction 5xx10^(-4)Wb//m^(2). The conductor experiences a force of 5xx10^(-3)N. What is the angle made by the conductor, with the direction of the field ?

An electric dipole, when held at 30^(@) with respect to a uniform electric field of 10^(4) N //C experiences a torqueof 9 xx 10^(-26) N m . Calculate dipole moment of the dipole.

A bar magnet when placed at an angle of 30^(@) to the direction of magnetic field field induction of 5xx10^(-2)T , experiences a moment of couple 25xx10^(-6) N-m . If the length of the magnet is 5cm its pole strength is

At a place the hoizontal componet of earth 's field is 0.5 xx 10^(-4) T . A bar magnet suspended horizontally perpendicular to to earth' field experience a torque of 4.5xx 10^(-4) N - M at the place . The magnetic moment of the magnet is .

A2Z-MAGNETISM AND MATTER-Section D - Chapter End Test
  1. A magnet when placed perpendicular to a uniform field of strength 10^(...

    Text Solution

    |

  2. The true value of angle of dip at a place is 60^(@), the apparent dip ...

    Text Solution

    |

  3. A magnetic needle lying parallel to a magnetic field requires W units ...

    Text Solution

    |

  4. A thin rectangular magnet suspended freely has a period of oscillation...

    Text Solution

    |

  5. The length of a magnet is large compared to its width and breadth. The...

    Text Solution

    |

  6. Two identical short bar magnets, each having magnetic moment M, are pl...

    Text Solution

    |

  7. The magnet field lines due to a bar magnet are correctly shown in

    Text Solution

    |

  8. A curve between magnetic moment and temperature of magnet is

    Text Solution

    |

  9. Which curve may best repreasent the current deflection in a tangent ga...

    Text Solution

    |

  10. The variation of the intensity of magnetisation (I) with respect to th...

    Text Solution

    |

  11. For ferromagnetic material, the relative permeability (mu(r)), versus ...

    Text Solution

    |

  12. A magnet is suspended horizontal in the earth's magnetic field. When i...

    Text Solution

    |

  13. The field due to a magnet at a distance R~ from the centre of the magn...

    Text Solution

    |

  14. A long magnet is cut in two parts in such a way that the ratio of thei...

    Text Solution

    |

  15. If the magnetic flux is expressed in weber, then magnetiv induction ca...

    Text Solution

    |

  16. Magnetic intensity for an axial point due to a short bar magnet of mag...

    Text Solution

    |

  17. A small rod of bismuth is suspended freely between the poles of a stro...

    Text Solution

    |

  18. Magnetic moment of two bar magnets may be compared with the help of

    Text Solution

    |

  19. At place, the magnitudes of the horizontal component and total intensi...

    Text Solution

    |

  20. The angle of dip at a certain place is 30^(@). If the horizontal compo...

    Text Solution

    |

  21. The horizontal component of the earth's magnetic field is 0.22 Gauss a...

    Text Solution

    |