Find magnetic field at O

Q: Find magnetic field at $O$

a (a) ${B_1} = {B_3} = {B_5} = 0$ ${B_2} = \frac{{{\mu _0}}}{{4\pi }}.\frac{{\theta i}}{{3r}} \otimes ,\;{B_4} = \frac{{{\mu _0}}}{{4\pi }}.\frac{{\theta i}}{{2r}}$ $\odot$ and ${B_6} = \frac{{{\mu _0}}}{{4\pi }}.\frac{{\theta i}}{r} \otimes $ $\therefore $ Net magnetic field at $O$, ${B_{net}} = {B_2} - {B_4} + {B_6}$ $ = \frac{{{\mu _0}}}{{4\pi }}.\frac{{\theta i}}{r}\left( {\frac{1}{3} - \frac{1}{2} + 1} \right) = \frac{{5{\mu _0}\theta i}}{{24\pi r}}$

SECTION - A [PHYSICS - MCQ]

GSEB - English Medium

Find magnetic field at $O$

A$\frac{{5{\mu _0}i\theta }}{{24\pi r}}$
B$\frac{{{\mu _0}i\theta }}{{24\pi r}}$
C$\frac{{11{\mu _0}i\theta }}{{24\pi r}}$
D
Zero

Diffcult

STD 11 Science
NEET
STD 12 - 4. Moving charges and magnetism
Physics

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