APFIVE Magnetic Force and Kinetic Energy
An electron is accelerated from rest through a potential difference of 200 V. Upon entering a region with a uniform magnetic field perpendicular to its velocity, what happens to the electron’s kinetic energy?
A
It decreases as the electron moves in a circular path
B
It remains constant
C
It increases proportionally to the magnetic field strength
D
It oscillates between maximum and minimum values
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