In a circular loop of radius R, current I enters at point A and exits at point B , as…
Physics · Class 12 · CBSE — Moving Charges and Magnetism
In a circular loop of radius R, current I enters at point A and exits at point \(B\) , as shown in the figure. The value of the magnetic field at the centre O of the loop is:
- \(\frac{\mu_{0} {I}}{{R}}\)
- zero
- \(\frac{\mu_{0} {I}}{2 {R}}\)
- \(\frac{\mu_{0} I}{4 R}\)
Answer
(B) zero
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