Question

Find the magnetic field at point o
Shown in the following figure.
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Answer 1

Answer:

1. here the magnetic field at O =(UoI/2r)+(UoI/4pi×r)+(UoI/4pi×r)=UoI/2r(pi+1)/pi.
2. here magnetic field=(UoI/4pi×r)×(sin30*+sin30*)-(UoI/4pi×r')×(sin30*+sin30*)+(UoI/4pi×r'')×(sin30*+sin30*.
3. here r=acos30*
4. r'=2acos30*
5. r''=3acos30*
6. so the field in second case=
7. $\sqrt{3} uo \times i \div 8\pi \times a- \sqrt{3} uo \times i \div 16\pi \times r + \sqrt{3} o \\16\pi \times a + \sqrt{3}uo \times i \div 24\pi \times a$
8. hope it helps.
9. please mark me as the brainliest.
10. (11/48pi×a)3^1/2UoI