Respuesta :
Answer: kinetic energy remains constant.
Explanation: The force on the charged particle is always perpendicular to the direction of its movement. Also, magnetic forces cause charged particles to change their direction of motion, but they do not change the speed of the particle. If the force is perpendicular to the motion, then no work is done. Hence magnetic forces do no work on charged particles and cannot increase their kinetic energy. Kinetic energy is therefore remain constant.
In a case where only the magnetic field acts on the particle, its kinetic energy will kinetic energy remains constant.
This is because, there is perpendicular force on every charged particle which is at right angle to the direction of its movement.
And there is also a change in direction of motion of particles by the magnetic forces, but the kinetic energy will remains constant.
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