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11thHeaven
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Homework Statement
Electrons (mass m, charge –e) are accelerated from rest through a potential difference V and are then deflected by a magnetic field B that is perpendicular to their velocity. Find the radius of the resulting electron trajectory.
Homework Equations
[tex]F=\dfrac{mv^2}{r}[/tex] [tex]F=qvB[/tex]
The Attempt at a Solution
I don't know where to start with this. The electron moves through the potential difference, and presumably gains kinetic energy, but I don't know how to express this in the equations above to get an answer.
Help appreciated.