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एक लूप जिसमे धारा i बह रही है, x-y तल में स्थित है। एकांक वेक्टर `hat(k)` पृष्ठ के लम्बवत बाहर की ओर है। धारा-लूप का ओर है। धारा-लूप का चुम्बकीय आघूर्ण है :
image
A. `a^(2)ihat(k)`
B. `((pi)/(2)+1)a^(2)ihat(k)`
C. `-((pi)/(2)+1)a^(2)ihat(k)`
D. `(2pi+1)a^(2)ihat(k)`

1 Answer

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Best answer
Correct Answer - B
`vec(M)=ivec(A)`
`A=a^(2)+4(pi((a)/(2))^(2))/(2)=(pi/(2)+1)a^(2)`
`vec(A)=((pi)/(2)+1)a^(2)hatk`

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