All Problems Constant Magnetic Field, Magnetics
Problem 3.222
A current \(I=5.0\) A flows along a thin wire shaped as shown in Fig. \(3.59 .\) The radius of a curved part of the wire is equal to \(R=\) \(=120 \mathrm{~mm},\) the angle \(2 \varphi=90^{\circ} .\) Find the magnetic induction of the field at the point \(O\).
