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An infinite cylindrical current carrying wire carries a current that is uniformly distributed over its cross section. The magnetic field as a function of distance form it’s axis is-

Option 1 -

a

Option 2 -

b

Option 3 -

c

Option 4 -

d

0 3 Views | Posted 2 months ago
Asked by Shiksha User

  • 1 Answer

  • V

    Answered by

    Vishal Baghel | Contributor-Level 10

    2 months ago
    Correct Option - 3


    Detailed Solution:

    Apply Ampere’s Law

    For inside

    B 2 π r = μ 0 J π r 2            

    ⇒ B ∝ r      

    For outside

    B 2 π r = μ 0 J π R 2

    ⇒ B ∝ 1 r       

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