Home
Class 12
PHYSICS
The length of a bar magnet is 10 cm and ...

The length of a bar magnet is 10 cm and its pole strength is `10^(-3)` Weber. It is placed in a magnetic field of induction `4 pi × 10^(-3)` Tesla in a direction making an angle `30^(@)` with the field direction. The value of torque acting on the magnet will be –

A

`2pi xx 10^(-7) N-m`

B

`2pi xx 10^(-5) N-m`

C

`0.5 xx 10^(2) N-m`

D

None of these

Text Solution

Verified by Experts

Promotional Banner

Topper's Solved these Questions

  • MAGNETIC EFFECTS OF CURRENT

    DISHA|Exercise physics|80 Videos

  • MECHANICAL PROPERTIES OF FLUIDS

    DISHA|Exercise Physics|28 Videos

Similar Questions

Explore conceptually related problems

A bar magnet of length 10cm and having the pole strength equal to 10^(-3) weber is kept in a magnetic field having magnetic induction (B) equal to 4pixx10^(-3) Tesla. It makes an angle of 30^(@) with the direction of mwgnetic induction. The value of the torque acting on the magnet is (mu_(0)=4pixx10^(-7) weber//ampxxm)

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

A beam of protons enters a uniform magnetic field of 0.3T with velocity of 4xx10^5m//s in a direction making an angle of 60^(@) with the direction of magnetic field. The path of motion of the particle will be

A bar magnet of length 10cm and pole strength 2 Am makes an angle 60^(0) with a uniform magnetic field of induction 50T . The couple acting on it is

A bar magnet of length 0.2 m and pole strength 5 Am is kept in a uniform magnetic induction field of strength 15 wb//m^(-2) making an angle of 30^(@) with the field. Find the couple acting on it.

A bar magnet of length 10 cm experiences a torque of 0.141 N-m in a uniform magnetic field of induction 0.4 wb//m^(2) , when it is suspended making an angle 45^(@) with the field, the pole strength of the magnet is

A bar magnet of magnetic moment vec(M) is placed in a magnetic field of induction vec(B) . The torque exerted on it is

A bar magnet of magnetic moment 0.4 Am^(2) is placed in a uniform magnetic field of induction 5 xx10^(-2) tesla. The angle between the magnetic induction and the magnetic moment is 30^(@) . The torque acting on the magnet is

DISHA-MAGNETISM AND MATTER-physics
  1. A magnet of moment M is lying in a magnetic field of induction B. W1 i...

    Text Solution

    |

  2. A bar magnet of magnetic moment 2.0 A-m^2 is free to rotate about a v...

    Text Solution

    |

  3. The length of a bar magnet is 10 cm and its pole strength is 10^(-3) W...

    Text Solution

    |

  4. At magnetic poles of earth, angle of dip is

    Text Solution

    |

  5. A short bar magnet is placed with its north pole pointing south. The n...

    Text Solution

    |

  6. A bar magnet with its poles 25 cm apart and of pole strength 24.0 A-m ...

    Text Solution

    |

  7. A small magnet of magnetic moment 4A-m2 is placed on a deflection magn...

    Text Solution

    |

  8. The ratio of intensities of magnetic field, at distances x and 2x from...

    Text Solution

    |

  9. Two magnets A and B are identical and these are arranged as shown in t...

    Text Solution

    |

  10. The time period of a freely suspended magnet is 4 seconds. If it is br...

    Text Solution

    |

  11. The length, breadth and mass of two bar magnets are same but their mag...

    Text Solution

    |

  12. A thin magnetic needle oscillates in a horizontal plane with a period ...

    Text Solution

    |

  13. A bar magnet made of steel has a magnetic moment of 2.5 A m^2 and mass...

    Text Solution

    |

  14. A short magnet of length 4 cm is kept at a distance of 20 cm to the ea...

    Text Solution

    |

  15. A 10 cm long bar magnet of magnetic moment 1.34 Am2 is placed in the m...

    Text Solution

    |

  16. A 30 cm long bar magnet is placed in the magnetic meridian with its no...

    Text Solution

    |

  17. A long straight horizontal cable carries a current of 2.5amp. In the d...

    Text Solution

    |

  18. Which of the following is/are not the main difference between electric...

    Text Solution

    |

  19. The correct statements regarding the lines of force of the magnetic fi...

    Text Solution

    |

  20. A short bar magnet of mangetic moment 5*25xx10^-2JT^-1 is placed with ...

    Text Solution

    |