(adsbygoogle = window.adsbygoogle || []).push({}); 1. The problem statement, all variables and given/known data

electrons emitted by a certain device are observed to travel in a circular path with a radius of 2.0cm when plaves in a uniform magnetic field whose strength is 10MN/C. What is the speed of the elctrons emitted by this device?

2. Relevant equations

I know that 10MN/C is "b-bar" as it is called in the book. But i'm not sure what equation to use.

3. The attempt at a solution

I attempted to use the equation Fm=q(velocity/c x B).... but im not sure what to use for the magnetic force.

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# Homework Help: Electron speed due to magnetic field.

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