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If a current i ampere flows in a long st...

If a current i ampere flows in a long straight thin walled tube, then magnetic induction at any point inside the tube is

A

Zero

B

Infinite

C

`(2i)/r`Tesla

D

`mu_0/(4pi)-(2i)/r` Tesla

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VGS PUBLICATION-BRILLIANT-ELECTROMAGNETISM-EXERCISE
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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...

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    |

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

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    |

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

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    |

  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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