A current‑carrying wire is placed between the poles of a U‑shaped magnet as shown in the diagram.
Determine the magnitude of the force on the wire due to the magnetic field. You may assume the field is uniform.
current in wire = 820 mA
length of wire in field = 6.9 cm
magnetic flux density = 0.074 T
Magnitude of force = ......................
Explain the direction of this force on the wire.