Magnetic Forces: Direction and Magnitude

This lecture introduces the calculation of magnetic force, starting from the concept of magnetic induction field and its relation to the force acting on a current-carrying wire. By analyzing the interaction between the magnetic field produced by a magnet and the magnetic field produced by the current in the wire, the instructor explains how to determine the direction and magnitude of the resulting force. The lecture also covers the case where the wire is parallel to the magnetic field, leading to the absence of force. The discussion extends to the application of the Lorentz force law in calculating the force on a current-carrying conductor in a magnetic field, emphasizing the importance of understanding and handling magnetic forces in laboratory settings.