An electron moves in a circular orbit of radius 48 cm, in an external magnetic field of strength 3.5 T. (Given the mass of electron 9.11x10kg) What is the velocity of the charge in m/s? A wire carrying a 32A current passes between the poles of a strong magnet that is directed at angle 44° to its field and experiences a 2.75N force on the 10 cm of wire in the field. What is the average field strength?