posted by Anonymous .
An electron is accelerated through 2550 V from rest and then enters a region where there is a uniform 1.30 T magnetic field. What are the maximum and minimum magnitudes of the magentic force acting on this electron?
First get the velocity (v) by setting
e V = (1/2) m v^2 (the kinetic energy)
(Capital V is the voltage)
The minumum magnetic force is zero (and occurs when v and B are parallel) and the maximum is e*v*B.