Home
Class 12
PHYSICS
A "bar" magnet of moment vec(M)=hat(i)+h...

A "bar" magnet of moment `vec(M)=hat(i)+hat(j)` is placed in a magnetic field induction `vec(B)=3hat(i)+4hat(j)+4hat(k)`.
The torque acting on the magnet is

A

`4 hati-hatj+hatk`

B

`hati+hatk`

C

`hati-hatj`

D

`hati+hatj+hatk`

Text Solution

Verified by Experts

The correct Answer is:
A
Promotional Banner

Topper's Solved these Questions

  • NTA NEET TEST 80

    NTA MOCK TESTS|Exercise PHYSICS|45 Videos

  • NTA NEET TEST 85

    NTA MOCK TESTS|Exercise PHYSICS|45 Videos

Similar Questions

Explore conceptually related problems

A "bar" magnet of moment bar(M)=hat(i)+hat(j) is placed in a magnetic field induction vec(B)=3hat(i)+4hat(j)+4hat(k) . The torque acting on the magnet is

A magnet of magnetic moment 50 hat(i) A-m^(2) is placed along the x-axis in a magnetic field vec(B)=(0.5hat(i)+3.0hat(j))T . The torque acting on the magnet is

A magnet of magnetic moment 20_(hatk) Am^(2) is placed along the z- axis in a magnetic field vec(B)=(0.4hat(j)+0.5hat(k)) T . The torque acting on the magnet is

The compenent of vec(A)=hat(i)+hat(j)+5hat(j) perpendicular to vec(B)=3hat(i)+4hat(j) is

If vec(A)=2hat(i)+3hat(j)-hat(k) and vec(B)=-hat(i)+3hat(j)+4hat(k) , then find the projection of vec(A) on vec(B) .

Three vectors vec(A) = 2hat(i) - hat(j) + hat(k), vec(B) = hat(i) - 3hat(j) - 5hat(k) , and vec(C ) = 3hat(i) - 4hat(j) - 4hat(k) are sides of an :

If vec(A)=3hat(i)+hat(j)+2hat(k) and vec(B)=2hat(i)-2hat(j)+4hat(k), then find the value of |vec(A)xxvec(B)|.

NTA MOCK TESTS-NTA NEET TEST 81-PHYSICS
  1. The cyclotron frequency of an electron gyrating in a magnetic field of...

    Text Solution

    |

  2. Two identical conducting wires AOB and COD are placed at right angles ...

    Text Solution

    |

  3. A "bar" magnet of moment vec(M)=hat(i)+hat(j) is placed in a magnetic ...

    Text Solution

    |

  4. A graph between the square of the velocity of a particle and the dista...

    Text Solution

    |

  5. The kinetic energy of a projectile at the highest point is half of the...

    Text Solution

    |

  6. A body starts from rest and moves with constant acceleration for t s....

    Text Solution

    |

  7. Two particles of masses m and M(Mgtm) are connected by a cord that pas...

    Text Solution

    |

  8. What is the disintegration constant of radon if the number of its atom...

    Text Solution

    |

  9. If a star can convert all the He nuclei completely into oxygen nuclei....

    Text Solution

    |

  10. A point mass m is suspended at the end of a massless wire of length l ...

    Text Solution

    |

  11. A hole is drilled along the diameter of the earth and pen is dropped i...

    Text Solution

    |

  12. Ultraviolet light by wavelength 200 nm is incident on the polished sur...

    Text Solution

    |

  13. The work function of a metal is in the range of 2 eV to 5 eV. Find whi...

    Text Solution

    |

  14. A capillary tube is dipped in water to a depth and the water rises to ...

    Text Solution

    |

  15. The bulk modulus of water is 2.0xx10^(9) N//m^(2). The pressure requir...

    Text Solution

    |

  16. The distance between the object and its real image from the convex len...

    Text Solution

    |

  17. A beam of light is travelling from region II to region III (see the fi...

    Text Solution

    |

  18. Two spheres of equal masses, one of which is a thin spheical shelll an...

    Text Solution

    |

  19. A uniform rod is held at an angle of 45^@ to the horizontal and releas...

    Text Solution

    |

  20. The electrical conductivity of a semiconductor increases when electrom...

    Text Solution

    |