# Do Positrons Bend The Same Direction As Electrons In A Magnetic Field?

Electrons obey the right hand rule when a magnetic field bends their path. According to the right-hand rule, will positrons bend in the same direction?

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The magnetic force is $$\vec F = q \vec v \times \vec B$$ so with a constant $\vec B, \vec v$, it's clear that the opposite sign of $q$ leads to the opposite force. So antiparticles surely bend in the opposite direction than the original particles.

Concerning your "right hand rule", I think that whichever you meant, it was misintetrpreted. Right hand rules aren't satisfied by individual particle species. They're general for all charged particles etc. At any rate, if you have a version of the right-hand rule that applies to electron's acceleration, the rule for positrons is the other one.

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what is $c$ doing in that equation?? –  Vineet Menon Dec 17 '11 at 18:27