1.

If the magnetic field at P can be written as K tan \[\left( \frac{\alpha }{2} \right)\], then K

A. \[\frac{{{\mu }_{0}}I}{4\pi d}\]
B. \[\frac{{{\mu }_{0}}I}{2\pi d}\]
C. \[\frac{{{\mu }_{0}}I}{\pi d}\]
D. \[\frac{2{{\mu }_{0}}I}{\pi d}\]
Answer» C. \[\frac{{{\mu }_{0}}I}{\pi d}\]


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