Charged particle within an electric field

  • #1
howsockgothap
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Homework Statement



phys2.png


Homework Equations



DON'T KNOW


The Attempt at a Solution



I can honestly say I've never been this confused by a question. At first my mind automatically went to a=qE/m since I have both charge and mass, but it became apparent that the equation was irrelevant because the velocity is constant. I thought it might be possible that I'm supposed to obtain the electric field by taking the integral of the electric potential, but I don't understand how I can get that using the information I have, and I have no sweet clue why the magnitude of the magnetic field is included.
 

Answers and Replies

  • #2
collinsmark
Homework Helper
Gold Member
3,169
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It means the magnetic force exactly cancels the electric force (plus the gravitational force). What's the magnetic force on the ion? :wink:
 

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