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Statement of a problem № 3820

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A current I is sent through a thin wire as in Fig. 13.5. The radius of the curved part of the wire is R. Show that the magnetic induction at the point O will be B=n0i/2piR(1+3pi/4)

Solution:
A current I is sent through a thin wire as in Fig. 13.5. The radius of the curve

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