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)μ_O I/2R. B)μ_O I/4R. C)μ_O I/8R. D)μ_O I/4πR. E)μ_O I/8πR.

Question

Quizplus · Accepted Answer

The magnetic field at the center of a semicircular wire is given by B = (μ₀I)/(4R), derived from the Biot-Savart law for a circular arc.

A Semicircular Wire of Radius R Connects Two Straight Wire