Home
Class 12
PHYSICS
The magnetic field existing in a region ...

The magnetic field existing in a region is gicen by `vecB =B_0(1+(x)/(l))vec k.` A square loop of edge l and carrying a current I, is placed with its edges parallel to the x-y axes. Find the magnitude of the net magnetic force experienced by the loop.

A

`B_(0) i L`

B

`2B_(0) i L`

C

`4B_(0) i L`

D

`5B_(0) i L`

Text Solution

Verified by Experts

The correct Answer is:
A

Force on `AB` is equal and opposite to force on `CO`
At `OA: x = 0, B = B_(0), F_(OA) = B_(0)iL`, towards right
At `BC: x = L, B = 2B_(0), F_(BC) = 2B_(0)iL`, towards left
`F_(n et) = F_(BC) - F_(OA) = B_(0)iL`, towards left
Promotional Banner

Topper's Solved these Questions

  • MAGNETIC FORCE, MOMENT AND TORQUE

    CP SINGH|Exercise Exercises|141 Videos

  • MAGNETIC FIELD

    CP SINGH|Exercise EXERCISE|77 Videos

  • NEET PREVIOUS YEAR

    CP SINGH|Exercise PAPER|89 Videos

Similar Questions

Explore conceptually related problems

The magnetic field in a region is given by vec(B)=B_(0)(1+(x)/(a))hat(k) . A square loop of edge length 'd' is placed with its edge along X-axis and Y-axis. The loop is moved with a constant velocity vec(V)=V_(0)hat(i) . The emf induced in the loop is

The magnetic field in a region is given by vecB =B_(0)((x)/(a))^hatk . A square loop of side d is placed with its edges along the x and y axes. The loop is moved with a constant velocity vecv=v_(0)hati The emf induced in the loop is :

A hypthetical magnetic field existing in a region is given by vecB= B_0 vece_r, where vec_r denotes the uit vector along the redial direction. A circular loop of radus a, carrying a current I, is placed with its plane parallel to the x-y plane and the centre at (0,0, d) .Find the magnitude of the magnetic force acting on the loop.

The magnetic field in a region is given by B=B_0(1+x/a)hat k .A square loop of edge-length d is placed with its edges along the x and y-axes. The loop is moved with a constant velocity v=v_0hat i .The emf induced in the loop is:

A square loop of edge 'a' carries a current l. The magnetic field at the centre of loop is

A square loop OABCO of side of side l carries a current i . It is placed as shown in figure. Find the magnetic moment of loop.

A square loop of side l carries a current i. it is placed as shown in figure. Find the magnetic moment of the loop.

When a conductor of length l carrying a current I is placed in a magnetic field of induction B at an angle theta with respect to vec(B) , the force experienced by it is

The magnetic field in a region is given by B = B_(0) (1 - (X)/(L)) K . A straight conductor AB of length 2L, placed with its ends at points A (a,0,0) and B(a,2L,0), carries a current I from A to B. Find the magnetic force on the conductor

CP SINGH-MAGNETIC FORCE, MOMENT AND TORQUE-Exercises
  1. Consider the situation shown in figure. The straight wire is fixed but...

    Text Solution

    |

  2. Two parallel wires carry currents of 20 A and 40 A in same direction. ...

    Text Solution

    |

  3. The magnetic field existing in a region is gicen by vecB =B0(1+(x)/(l)...

    Text Solution

    |

  4. A conducting circular loop of radius r carries a constant current i. I...

    Text Solution

    |

  5. A circular loop of radius a, carrying a current I, is placed in a tow ...

    Text Solution

    |

  6. The unit of electric current "ampere" is the current which when flowin...

    Text Solution

    |

  7. A square current carrying loop is suspended in a unifrom magnetic ...

    Text Solution

    |

  8. A closed loop PQRS carrying a current is place in a unifrom magnetic ...

    Text Solution

    |

  9. Shows a circular wire-loop of radius a m carrying a current I, placed ...

    Text Solution

    |

  10. A current-carrying ring is placed in a magnetic field. The direction o...

    Text Solution

    |

  11. A small circular flexible loop of wire of radius r carries a current I...

    Text Solution

    |

  12. A thin wire of length L is connected to two adjacent fixed points and ...

    Text Solution

    |

  13. A conducting loop carrying a current I is placed in a uniform magnetic...

    Text Solution

    |

  14. An irregular closed loop carrying a current has a shape such that the ...

    Text Solution

    |

  15. A closed loop lying in the xy plane carries a current. If a uniform ma...

    Text Solution

    |

  16. Two very long, straight , parallel wires carry steady currents I &-I ...

    Text Solution

    |

  17. AB and CD are smooth, parallel, horizontal rails on which a conductor ...

    Text Solution

    |

  18. In the previous question, (i) the force on T is proportional to i ...

    Text Solution

    |

  19. AB and CD are smooth, parallel rails, separated by a distance L and in...

    Text Solution

    |

  20. In the previous question, if B is normal to the plane of the rails,

    Text Solution

    |