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Question: Answered & Verified by Expert
A current $i$ is flowing in a straight conductor of length $L$. The magnetic induction at a point on its axis at a distance $\frac{L}{4}$ from its centre will be :
PhysicsMagnetic Effects of CurrentJEE MainJEE Main 2013 (22 Apr Online)
Options:
  • A
    Zero
  • B
    $\frac{\mu_0 i}{2 \pi L}$
  • C
    $\frac{\mu_0 i}{\sqrt{2} L}$
  • D
    $\frac{4 \mu_0 i}{\sqrt{5} \pi L}$
Solution:
1357 Upvotes Verified Answer
The correct answer is:
Zero
Magnetic field at any point lies on axial position of current carrying conductor $\mathrm{B}=0$

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