At the end of this lesson you should be able to:

• Use the defining equation for a magnetic field B to determine the magnitude and direction of the magnetic force exerted on a electric charge moving in a region where there is a magnetic field.
• Carry out clauclations using the vector product.
• Calculate the magnitude and direction of the magnetic force on a current carrying conductor when placed in an external magnetic field.
• Determine the magnitude and direction of the torque exerted on a closed current loop in an a external magnetic field.
• Calculate the period and radius of the circular orbit of a charged particle moving in a uniform magnetic field.