Solve the all parts of following question:
Question: A laboratory magnet (see the figure) with a field B = 0.15 T over an effective area 18.0 cm in diameter exerts a force on a current-carrying wire that crosses between the pole faces at right angles to the field. The current in the wire is 8.0 A.
Part A: What is the magnitude of the force on the wire?
Part B: What is the direction of the force?
I need help to find the magnitude of the force on the wire.