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Question: Answered & Verified by Expert
The intensity of the magnetic induction field at the centre of a single turn circular coil of radius $5 \mathrm{~cm}$ carrying current of $0.9 \mathrm{~A}$.
PhysicsMagnetic Properties of MatterAP EAMCETAP EAMCET 2010
Options:
  • A $36 \pi \times 10^{-7} \mathrm{~T}$
  • B $9 \pi \times 10^{-7} \mathrm{~T}$
  • C $36 \pi \times 10^{-6} \mathrm{~T}$
  • D $9 \pi \times 10^{-6} \mathrm{~T}$
Solution:
1313 Upvotes Verified Answer
The correct answer is: $36 \pi \times 10^{-7} \mathrm{~T}$
The intensity of magnetic induction field
$B=\frac{\mu_0 i}{2 r}$
$=\frac{4 \pi \times 10^{-7} \times 0.9}{2 \times 5 \times 10^{-2}}$
$B=36 \pi \times 10^{-7} \mathrm{~T}$

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