All Problems

Constant Magnetic Field, Magnetics

Problem 3.222

A current I=5.0I=5.0 A flows along a thin wire shaped as shown in Fig. 3.59.3.59 . The radius of a curved part of the wire is equal to R=R= =120 mm,=120 \mathrm{~mm}, the angle 2φ=90∘.2 \varphi=90^{\circ} . Find the magnetic induction of the field at the point OO.

Reveal Answer
B=(π−φ+tan⁡φ)μ0I/2πR=28μTB=(\pi-\varphi+\tan \varphi) \mu_{0} I / 2 \pi R=28 \mu \mathrm{T}
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