Forces on electrons inside a coil

[kankamuso]

Hi all,

First of all, sorry if this is a dumb question but I just wanted to make sure.

Imagine the body of an electron microscope and the focusing coils on it. I know that due to the generated magnetic fields, the electrons tend to modify its distance to the central axis in a helix-like pattern. Nevertheless, I am not able to find around the effect of the associated electric field on the particle... isn't there any?. Imagine a coil whose magnetic field goes from bottom to top of the microscope, wouldn't the associated electric field tend to stop the electrons?.

Thanks in advance,

Jose.

 

[berkeman]

Are you familiar yet with the equation for the Lorentz Force?

https://en.wikipedia.org/wiki/Lorentz_force