The value of magnetic field at point O in the given figure is:

Physics · Class 12 · CBSE — Moving Charges and Magnetism

1. \(\frac{\mu_{0} {I}}{2 \pi {R}}\)
2. \(\frac{\mu_{0} {I}}{\pi {R}}\)
3. \(\frac{\mu_{0} {I}}{4 {R}}\)
4. \(\frac{\mu_{0} {I}}{{R}}\)

Answer

(C) _ 0 I 4 R

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