What is the magnetic field at a distance R from a coil of radius r carrying current I?
Physics · Class 12 · CBSE — Moving Charges and Magnetism
What is the magnetic field at a distance R from a coil of radius r carrying current I?
- \(\frac{\mu_{0} I r^{2}}{2\left(R^{2}+r^{2}\right)^{3 / 2}}\)
- \(\frac{\mu_{0} I R^{2}}{2\left(R^{2}+r^{2}\right)^{3 / 2}}\)
- \(\frac{\mu_{o} I}{2 r}\)
- \(\frac{\mu_{o} I}{2 R}\)
Answer
(A) _ 0 I r^ 2 2 (R^ 2 +r^ 2 )^ 3 / 2
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