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A coll having N turns is wound tightly ...

A coll having N turns is wound tightly in the form of a spiral with inner and outer radii a and b respectively when a current I passes through the coll , the magnetic field at the centre is

A

`(mu_0NI)/b`

B

`(2mu_0NI)/a`

C

`(mu_0NI)/(2(b-a))ln ""(b /a)`

D

`(mu_0NI)/(2(b-a))ln ""(b /a)`

Text Solution

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VGS PUBLICATION-BRILLIANT-ELECTROMAGNETISM-EXERCISE
  1. A coll having N turns is wound tightly in the form of a spiral with i...

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  2. A wire loop formed by joining two semicircular sections of radii R(1) ...

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  3. A closely wound solenoid 80 cm long has 5 layers of windings of 400 t...

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  4. A proton moving with a velocity 2 . 5 xx 10^(7) m-s ^(-1) , enters...

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  5. A particle of mass m and charge q moves with a constant velocity V alo...

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  6. Which of the following statements are in correct ? a) Magnetic lin...

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  7. Which of the following statemetns are NOT the functions of the commut...

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  8. Which of the following factors regarding solenoid is in correct ? ...

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  9. The current in a generator armature is AC because

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  10. The magnitude of magnitic field at a point due to a current carrying s...

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  11. If a current i ampere flows in a long straight thin walled tube, then ...

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  12. A coll having N turns is wound tightly in the form of a spiral with i...

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    |

  13. A wire loop formed by joining two semicircular sections of radii R(1) ...

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    |

  14. A closely wound solenoid 80 cm long has 5 layers of windings of 400 t...

    Text Solution

    |

  15. A proton moving with a velocity 2 . 5 xx 10^(7) m-s ^(-1) , enters...

    Text Solution

    |

  16. A particle of mass m and charge q moves with a constant velocity V alo...

    Text Solution

    |

  17. Which of the following statements are in correct ? a) Magnetic lin...

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    |

  18. Which of the following statemetns are NOT the functions of the commut...

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    |

  19. Which of the following factors regarding solenoid is in correct ? ...

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    |

  20. The current in a generator armature is AC because

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    |