A long current-carrying wire lies on the y axis and carries current I = 4.5 A along the...

A long current-carrying wire lies on the y axis and carries current I = 4.5 A along the y direction. A magnetic field of magnitude B = 1.2 T lies in the y–z plane, directed 30° away from the y axis as shown in Figure P20.55. (a) What is the direction of the magnetic force on the wire? (b) What is the magnitude of the magnetic force on a 1.0-m-long section of the wire?