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Electron in magnetic field
An electron is moving at 320 m/s towards a wall .1 m away. There is a uniform magnetic field parallel to the wall. How strong must the field be so that the electron barely misses the wall?
I know that an electron in a magnetic field moves in a circle, but that doesn't seem like enough to find the B field
Customer support service by UserEcho
If you know that the magnetic field will make the electron go in a circle then imagine it going in a circle just large enough that it will just scrape the wall. It would be easier to imagine it if you drew it along with labeling every information you wrote here (the distances from the wall, velocity, etc.). Then, write newton's second law, force of a magnetic field, and centripetal force equation. You'll see a connection with these 3 equations along with the drawing.