PCS 211 Study Guide - Final Guide: Lorentz Force, Orbital Speed

61 views6 pages

Document Summary

29. 1 the magnetic field (cid:149) magnetic field b is a vector, (like e). (cid:149) direction of b is the direction in which the north pole of a compass needle points at that location. Magnetic field lines are from n pole to s pole outside a magnet, and continue inside the magnet. (cid:149) the magnitude of b is defined in terms of the magnetic force: F = qv (cid:1) b (cid:149) f is (cid:2) to both b and v (cross product) (cid:149) | f| = qvbsin(cid:1) B (cid:1) v (cid:149) f is on a moving charged particle. (cid:149) f = 0, if b || v. (sin (cid:1) = 0) Unit: tesla, it is also called weber per square meter (wb/m2) 1 t = 104 g (cid:149) the direction of the force can be determined by the right-hand rule . (cid:149) magnetic forces on a positive charge and a negative charge are in opposite direction.