MCQ
Find out magnetic field at point $O$ ?
- ✓$\pi\times {10^{ - 5}}\,T$
- B$\pi\times {10^{ - 4}}\,T$
- C$\pi\times {10^{ - 1}}\,T$
- D${10^{ - 5}}\,T$
✓
Answer
Correct option: A.
$\pi\times {10^{ - 5}}\,T$
a
$\mathrm{B}=\frac{1}{4} \times \frac{\mu_{0} \mathrm{I}}{2 \mathrm{R}}$
$\mathrm{B}=\frac{1}{4} \times \frac{\mu_{0} \mathrm{I}}{2 \mathrm{R}}$
$\mathrm{B}=\frac{4 \pi \times 10^{-7} \times 10}{2 \times 5 \times 10^{-2}} \times \frac{1}{4} \,\mathrm{T}=\pi \times 10^{-5} \,\mathrm{T}$
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