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Velocity and magnetic force

  • #1
why is the magnitude of velocity of a charged particle not affected by magnetic force? :bugeye:
 

Answers and Replies

  • #2
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Homework Helper
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The magnetic force always acts in a direction perpendicular to the velocity, sine F=q(vXB), so it only changes the direction of motion, not the speed. This also means it does no work on the particle.
 

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