Physics 202 Quiz # 24 March 10, 2008

1. Determine the direction of the magnetic force acting on the charged particles in the figure below.

Physics 214 Quiz # 24 March 10, 2008

1. A rod of mass 0.720 kg and radius 6.00 cm rests on two parallel rails (Fig. P29.15) that are d = 12.0 cm apart and L = 45.0 cm long. The rod carries a current of I = 48.0 A (in the direction shown) and rolls along the rails without slipping. A uniform magnetic field of magnitude 0.240 T is directed perpendicular to the rod and the rails. If it starts from rest, what is the speed of the rod as it leaves the rails?