Question

An electron with charge -e and mass m travels at a speed v in a plane

perpendicular to a magnetic field of magnitude B. The electron follows a

circular path of radius R. In a time, t, the electron travels halfway around the

circle. What is the amount of work done by the magnetic field?​

Answer 1

Answer:

An acceleration can cause speed to increase, decrease, and even stay the same! Acceleration tells you the rate at which the velocity is changing. ... The acceleration can change the magnitude and/or the direction of the velocity. Speed is only the magnitude of the velocity.