Home
Class 12
PHYSICS
If the outer coil of the precious probl...

If the outer coil of the precious problem is rotated through 90^@ about a diameter, what would be the magnitude of the magnetic field B at the centre ?

Text Solution

Verified by Experts

In this case magnetic fields due to C_1 and
C_2 at P be perpendicular to each other.
Then net
`B=sqrt((pixx10^(-3))^2 +((pixx106(-3)^2`
`=sqrt2 xx pixx10^(-3) T`
`=sqrt2pi mT`.
Promotional Banner

Topper's Solved these Questions

  • MAGNETIC FIELD DUE TO CURRENT

    HC VERMA|Exercise Objective 2|7 Videos

  • MAGNETIC FIELD

    HC VERMA|Exercise Exercises|61 Videos

  • MAGNETIC PROPERTIES OF MATTER

    HC VERMA|Exercise Exercises|9 Videos

Similar Questions

Explore conceptually related problems

(i) Two circular coils of raddii 5.0 cm and 10 cm carry equla currents of 1 A .The coils have 50 and 100 turns respectively and are placed in such a way that their planes as well as the centre coincide.Find the magnitude of the magnetic field B at the common centre when the currents in the coils are (a) in the same sense ,(b) in the opposite sense. (ii) If the outer coil of the above problem is rotated through 90^(@) about a diameter,what would be the magnitude of the magnetic field B at the centre?

A 100 turn closely wound circular coil of radius 10cm carries a current of 3*2A . (i) What is the field at the centre of the coil? (ii) What is the magnetic moment of this arrangement? The coil is placed in a vertical plane and is free to rotate about a horizontal axis which coincides with its diameter. A uniform magnetic field of 2T in the horizontal direction exists such that initially the axis of the coil is in the direction of the field. The coil rotates through an angle of 90^@ under the influence of the magnetic field. (iii) What are the magnitudes of the torques on the coil in the initial and final positions? (iv) What is the angular speed acquired by the coil when it has rotated by 90^@ ? The moment of inertia of the coil is 0*1kgm^2 .

A tightly wound 100 turn coil of radius 10cm is carrying a current of 1A . What is the magnitude of the magnetic field at the centre of the coil?

Two identical coils have a common centre and their planes are at right angles to each other. They carry equal currents. If the magnitude of the magnetic field at the centre due to one of the coils is B then that due to the combination is

Two identical coils carry equal currents have a common centre and their planes are at right angles to each other. The ratio of the magnitude of the resulatant magnetic field at the centre and the field due to one coil is

A circular coil of 200 turns has a radius of 10 cm and carries a current of 2.0 A. (a) Find the magnitude of the magnetic field (vec B) at the centre of the coil. (b) At what distance from the centre along the axis of the coil will the field B drop to half its value at the centre?

A circular coil of wire consisting of 100 turns, each of radius 8.0 cm carries a current of 0.40 A. What is the magnitude of the magnetic field B at the centre of the coil?

A 100 turn closely wound circular coil of radius 10 cm carries a current of 3.2A. A uniform horizontal magnetic field of strength 2T is turned on. The axis of the coil is initially in the direction of the field . The coil rotates through an angle of 90^(@) under the influence of the magnetic field. The moment of inertia of the coil is 0.1 kg m^(2) What is the angular speed acquired by the coil when it has rotated by 90^(@) ?

HC VERMA-MAGNETIC FIELD DUE TO CURRENT-Exercises
  1. A conducting circular loop of radius a is connected to two long, strai...

    Text Solution

    |

  2. Two circular coils of radii 5.0 cm and 10 cm carry equal currents of 2...

    Text Solution

    |

  3. If the outer coil of the precious problem is rotated through 90^@ abo...

    Text Solution

    |

  4. A circular loop of radius 20 cm carries a current of 10 A. An electron...

    Text Solution

    |

  5. A circular loop of radius R carries a current I. Another circular loop...

    Text Solution

    |

  6. A circular loop of radius r carrying a current i is held at the centre...

    Text Solution

    |

  7. Find the magnetic field B due to a semicircular wire of radius 10.0 cm...

    Text Solution

    |

  8. A piece of wire carrying a current of 6.00 A is bent in the form of a ...

    Text Solution

    |

  9. A circular loop of radius r carries a current i. How should a long , ...

    Text Solution

    |

  10. A circular coil of 200 turns has a radius of 10 cm and carries a curre...

    Text Solution

    |

  11. A circular loop of radius 4.0 cm is placed in a horizontal plane and c...

    Text Solution

    |

  12. A charge of (3.14 xx 10^-6) C is distributed uniformly over a circular...

    Text Solution

    |

  13. A thin but long, hollow, cylindrical tube of radius r carries a curre...

    Text Solution

    |

  14. A long, cylindrical tube of inner and outer radii a and b carries a cu...

    Text Solution

    |

  15. A long, cylindrical wire of radius b carries a current i distributed u...

    Text Solution

    |

  16. A solid wire of radius 10 cm carries a current of 5.0 A distributed un...

    Text Solution

    |

  17. Sometimes we show an idealised magnetic field which is uniform in a gi...

    Text Solution

    |

  18. Two large metal sheets carry surface currents as shown in figure . The...

    Text Solution

    |

  19. Consider the situation of the previous problem. A particle having char...

    Text Solution

    |

  20. The magnetic field B inside a long solenoid, carrying a current of 5.0...

    Text Solution

    |