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A magnetic field at a distance from a circular loop of radius r carrying current I is found at its center. What is the expression for this magnetic field?

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MCQ_SA

Single Answer MCQ

Q-00085395

B = (μ₀ I) / (2r)

B = (μ₀ I) / (4π r²)

B = (μ₀ I) / (4r)

B = (μ₀ I) / (2π r)

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