With what force does a uniform magnetic field with induction B = 0.2 T act on a straight conductor l = 50 cm

With what force does a uniform magnetic field with induction B = 0.2 T act on a straight conductor l = 50 cm long with a current of 4 A, if it is perpendicular to the field lines?

These tasks: B (induction of a uniform magnetic field) = 0.2 T; L (straight conductor length) = 50 cm (0.5 m); I (current in the conductor) = 4 A; the conductor is perpendicular to the field lines (α = 90º; sinα = 1).

The force (Ampere force), with which a uniform magnetic field acts on a taken rectilinear conductor, is determined by the formula: Fa = I * B * l * sinα = I * B * l.

Calculation: Fa = 4 * 0.2 * 0.5 = 0.4 N.

Answer: A force of 0.4 N. acts on a straight conductor.