Home
Class 11
PHYSICS
The magnetic field due to current in a s...

The magnetic field due to current in a straight wire segment of length L at a point on its perpendicular bisector at a distance `r ( r gt gt L)`

A

decreases as `1/r`

B

decreases as `t/r^(2)`

C

decreases as `1/r^(3)`

D

approaches a finite limit as `r to infty`

Text Solution

Verified by Experts

The correct Answer is:
B
Promotional Banner

Topper's Solved these Questions

  • MAGNETIC EFFECT OF ELECTRIC CURRENT

    TARGET PUBLICATION|Exercise Evaluation Test|12 Videos

  • MAGNETIC EFFECT OF ELECTRIC CURRENT

    TARGET PUBLICATION|Exercise Critical Thinking Introduction|41 Videos

  • LAWS OF MOTION

    TARGET PUBLICATION|Exercise EXERCISE|281 Videos

  • MAGNETISM

    TARGET PUBLICATION|Exercise MCQs|147 Videos

Similar Questions

Explore conceptually related problems

The magnetic field produced around a straight line wire when current flows through it is

The magnetic field due to a current carrying circular loop of radius 3 m at as point on the axis at a distance of 4m from the centre is 54 muT . What will be its value at the centre of the loop/

The magnetic field due to a current carrying circular loop of radius 6 cm at a point on the axis at a distance of 8 cm from the centre is 108 mu T . What will be its value at the centre of the loop?

Electric field on the axis of a small eletric dipole at a distance r is E_1 and at a distance of 2r on its perpendicular bisector, the electric field is E_2 . Then the ratio E_2:E_1 is

The strength of the magnetic field at a point r near a long straight current carrying wire is B . The field at a distance r/2 will be

Magnetic field due to a ring having n turns at a distance x on its axis is proportional to (if r = radius of ring)

Using electrostatic analogue, obtain the magnetic field at a distance 'x' on the perpendicular bisector of a magnetic dipole mu for x » R, verify that barB=(mu_0)/(4pi)(pi)/(x^2)

State the expression for the magnetic field due to a circular are of wire carrying a current I. Hence find the magnetic field at the centre of circular coil and having n turns.

A very long straight wire of radius 'r carries current 'I'. Intensity of magnetic field 'B' at a point, lying at a perpendicular distance 'a' from the axis is propto ___________

State the expression for magnetic field due to:- infinity long, straight wire,

TARGET PUBLICATION-MAGNETIC EFFECT OF ELECTRIC CURRENT -Competitive Thinking Introduction
  1. The region surrounding a stationary electric dipole has

    Text Solution

    |

  2. The magnetic field near a current carrying conductor is given by

    Text Solution

    |

  3. The magnetic field due to current in a straight wire segment of length...

    Text Solution

    |

  4. Two indentical long conducting wires AOB and COD are placed at right a...

    Text Solution

    |

  5. A long straight wire carrying current of 30 A is placed in an exte...

    Text Solution

    |

  6. A current carrying circular loop is freely suspended by a long thread....

    Text Solution

    |

  7. A current of 0.1 A circulates around a coil of 100 turns and having a ...

    Text Solution

    |

  8. A circular loop of radius 'r' of conducting wire connected with a Volt...

    Text Solution

    |

  9. A long wire carries a steady current . It is bent into a circle of one...

    Text Solution

    |

  10. The dipole moment of a circular loop carrying a current I, is m and th...

    Text Solution

    |

  11. Two concentric coils each of radius equal to 2 pi cm are placed at rig...

    Text Solution

    |

  12. Magnetic field due to a ring having n turns at a distance x on its axi...

    Text Solution

    |

  13. The magnetic field due to a current carrying circular loop of radius 3...

    Text Solution

    |

  14. The magnetic induction at the centre of a current carrying circular co...

    Text Solution

    |

  15. A circular coil of radius r carries a current I. The magnetic field at...

    Text Solution

    |

  16. Magnetic fields at two points on the axis of a circular coil at a dist...

    Text Solution

    |

  17. If a proton is projected in a direction perpendicular to a uniform mag...

    Text Solution

    |

  18. A charged particle moving with velocity vis subjected to electric fiel...

    Text Solution

    |

  19. A charged particle is moved along a magnetic field line. The magnetic ...

    Text Solution

    |

  20. A particle of mass 'm' and charge 'q' is incident on XZ plane with vel...

    Text Solution

    |