Home
Class 12
PHYSICS
A straight conductor of length l m carry...

A straight conductor of length l m carrying a current 1A is bent in the form of a semicircle. The magnetic field (in tesla) at the centre of the semicircle is-

A

`pi^2/Lxx10^7`

B

`pi^I/I^2xx10^-7`

C

`pi^2I/Ixx10^-7`

D

`pi^2I^2/Ixx10^-7`

Text Solution

Verified by Experts

Promotional Banner

Topper's Solved these Questions

  • QUESTION PAPER 2016

    UNITED BOOK HOUSE|Exercise EXERCISE|49 Videos

  • QUESTION PAPER 2018

    UNITED BOOK HOUSE|Exercise EXAMPLE|75 Videos

Similar Questions

Explore conceptually related problems

A straight conductor of length l m carrying a current I A is bent in the form of a semicirle. The magnetic field (in tesla) at the centre of the semicircle is

Magetic moment of a straight iron wire of length l is p . If is bent in the shape of a semicircle . Then

A rod of length L and magnetic-moment M is bent to form a semicircular shape.What will be the new magnetic moment?

State ampere's circuital law. A straight wire carrying a current of 12A is bent into a semicircular arc of radius 2 cm as shown. What is the magnetic field B at O due to (a) Straight segment (b) the semicircular arc

UNITED BOOK HOUSE-QUESTION PAPER 2017-EXERCISE
  1. If L and R denote inductance and resistance respectively, then the dim...

    Text Solution

    |

  2. A proton with a speed of 2xx10^7 m.s-1 enters a magnetic field of flux...

    Text Solution

    |

  3. A straight conductor of length l m carrying a current 1A is bent in th...

    Text Solution

    |

  4. Mutual inductance of two coils can be increased by

    Text Solution

    |

  5. Two capacitors of capacitances C1" and "C2, are connected in parallel....

    Text Solution

    |

  6. The number of electrons in 2 coulomb of charge is-

    Text Solution

    |

  7. Write down the values of (barX+X) and (X.barX) in Boolean algebra.

    Text Solution

    |

  8. The cirtical angle of a transparent crystal for green light is 30^(@)....

    Text Solution

    |

  9. What will be the change in focal length f of a concave mirror when imm...

    Text Solution

    |

  10. State one difference between a dynamo and a motor.

    Text Solution

    |

  11. On what physical quantity does the magnetic moment of an electron revo...

    Text Solution

    |

  12. Is Burlow's wheel a motor? Give reason.

    Text Solution

    |

  13. Very high or very low resistance cannot be measured correctly by using...

    Text Solution

    |

  14. Define the corrent sensitivity and voltage sensitivity of a moving coi...

    Text Solution

    |

  15. What are the quantities that oscillate in an electromagnetic wave? Sho...

    Text Solution

    |

  16. The small ozone layer on top of the stratosphere is crucial for human ...

    Text Solution

    |

  17. The voltage applied across the cathode and anode of an X-ray generatin...

    Text Solution

    |

  18. Write the basic nuclear process of neutron undergoing beta-decay . Why...

    Text Solution

    |

  19. Define amplitude modulation. The height of a TV tower is 125 metre. Fi...

    Text Solution

    |

  20. Define surface density of electric charge. Two large conducting sphe...

    Text Solution

    |