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A semicircular wire of radius R connects two straight wire segments. If a current I flows...

A semicircular wire of radius R connects two straight wire segments. If a current I flows along the wire, the magnitude of the magnetic field at the center of the semicircular wire due to the current in the semicircular wire is

A) μoI/8πR.

B) μoI/2R.

C) μoI/8R.

D) μoI/4πR.

E) μoI/4R.

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