Home
Class 12
PHYSICS
The magnetic field due to a conductor of...

The magnetic field due to a conductor of uniform cross section of radius `a` and carrying a steady current is represented by

A

B

C

D

Text Solution

Verified by Experts

The correct Answer is:
A
`B prop r ` , inside
`B prop (1)/( r)` , outside
Promotional Banner

Topper's Solved these Questions

  • MAGNETIC EFFECTS OF CURRENT

    ERRORLESS|Exercise ASSERTION & REASON |18 Videos

  • MAGNETIC EFFECTS OF CURRENT

    ERRORLESS|Exercise NCERT BASED QUESTIONS (Force and Torque on a Current Carrying Conductor )|51 Videos

  • ELECTROSTATICS

    ERRORLESS|Exercise ASSERTION & REASON|25 Videos

  • MAGNETISM

    ERRORLESS|Exercise Assertion and Reason|22 Videos

Similar Questions

Explore conceptually related problems

The magnetic field due to a conductor fo unifrom cross section of radius a and carrying a steady current is represented by

Show graphically the variation of magnetic field due to a straight conductor of uniform cross-section or radius ‘a’ and carrying steady currently as a function of distance r (a > r) from the axis of the conductor.

A wire of non-uniform cross-section is carrying a steady current. Along the wire

A straight thick long wire of uniform cross-section of radius 5cm is carrying a steady current 5A . Calculate the magnetic field at a point 2cm from the axis of wire, well inside the wire.

The magnetic field near a current carrying conductor is given by

A straight thick long wire of uniform cross-section of radius a is carrying a steady current I. Calculate the ratio of magnetic field at a point a//2 above the surface of the wire to that at a point a//2 below its surface. What is the maximum value of the field of this wire?

State the Biot-Savart's law for the magnetic field due to a current carrying element. Use this law to obtain a formula for magnetic field at the centre of a circular loop of radius R carrying a steady current I, sketch the magnetic field lines for a current loop clearly indicating the direction of the field.

ERRORLESS-MAGNETIC EFFECTS OF CURRENT -PAST YEARS QUESTIONS
  1. Two concentric coils each of radius equal to 2pi cm are placed at righ...

    Text Solution

    |

  2. Circular loop of a wire and a long straight wire carry current I(c ) a...

    Text Solution

    |

  3. The magnetic field due to a conductor of uniform cross section of radi...

    Text Solution

    |

  4. Two very thin metallic wires placed along X and Y axes carry equal cur...

    Text Solution

    |

  5. An arrangement of three parallel straight wires placed perpendicular ...

    Text Solution

    |

  6. A cylindrical conductor of radius R is carrying constant current. The ...

    Text Solution

    |

  7. An electron enters a region where magnetic field (B) and electric fiel...

    Text Solution

    |

  8. When a proton is released from rest in a room, it starts with an initi...

    Text Solution

    |

  9. A uniform magnetic field acts right angles to the direction of motion ...

    Text Solution

    |

  10. A wire loop is rotated in magneitc field. The frequency of change of d...

    Text Solution

    |

  11. In a mass spectrometer used for measuring the masses of ions, the ions...

    Text Solution

    |

  12. An alternating electric field, of frequency v, is applied across the d...

    Text Solution

    |

  13. The figure shows three situations when an electron moves with velocity...

    Text Solution

    |

  14. An electron is travelling along the x-direction. It encounters magneti...

    Text Solution

    |

  15. A very long straight wire carries a current I. At the instant when a c...

    Text Solution

    |

  16. A charged particle enters a magnetic field H with its initial velocity...

    Text Solution

    |

  17. A beam of electrons passes underfected throgh unifromly perpendicula...

    Text Solution

    |

  18. A long straight wire carries a certain current and produces a magnetic...

    Text Solution

    |

  19. An electron entres a magnetic field whose direction is perpendicualr ...

    Text Solution

    |

  20. Two identical bar magnets are fixed with their centres at a distance d...

    Text Solution

    |