Home
Class 12
PHYSICS
The magnetic moment of a length 10 cm an...

The magnetic moment of a length 10 cm and pole strength 4.0 Am will be

A

`0.4 Am^(2)`

B

`1.6 Am^(2)`

C

`20 Am^(2)`

D

`8.0 Am^(2)`

Text Solution

Verified by Experts

The correct Answer is:
A

`M=mL=4xx10xx10^(-2)=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

The magnetic moment of bar magnet of length ' "2l and pole strength 'm' is

The magnetic dipole moment of a bar magnet of geometric length 6 cm and pole strength 100 Am is

The magnetic dipole moment of a bar magnet of geometric length 6 cm and pole strength 100 Am is

A magnetic dipole of lrngth 10 cm has pole strength of 20 Am apart . Find the magnetic moment of the dipole

A magnet of length 10 cm and pole strength 4xx10^(-4)Am is placed in a manetic field of induction 2xx10^(-5)weber m^(-2) , such that the axis of the magnet makes an angel 30^(0) with the lines of induction. The moment of the couple acting on the magnet is

Two magnets of length 10 cm each and pole strength 100 Am each are placed together such that separation between their south poles is 15 cm and that between their north poles is 35 cm. Calculate the force acting between the two magnets.

The force experienced by a pole of strength 100 Am at a distance of 0.2 m from a short magnet of length 5 cm and pole strength of 200 Am on its axial line will be

A magnet of length 0.1 m and pole strength 10^(-4) A.m. is kept in a magnetic field of 30 Wb//m^(2) at an angle 30^(@) . The couple acting on it is …xx10^(-4)Nm .

A2Z-MAGNETISM AND MATTER-Section D - Chapter End Test
  1. The magnetic moment of a length 10 cm and pole strength 4.0 Am will be

    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

    |