Magnetic field on charged cloud

  • I
  • Thread starter d4rr3n
  • Start date
  • #1
53
0

Main Question or Discussion Point

An electron beam can be curved into a loop using a magnetic field with flux lines at right angles to the electron beam. These electrons have a high kinetic energy leaving the electron gun.

My question is how would a magnetic field effect motionless charged particles for example a cloud of negatively ionised gas, would it also form into a loop. I'm thinking of the auroral oval around the Earth's poles
 

Answers and Replies

  • #2
Simon Bridge
Science Advisor
Homework Helper
17,847
1,644
The effect on the beam is the same as the effect on a single electron with velocity ##v## ... the magnitude force is ##F=evB## and it points at right angles to both ##\vec v## and ##\vec B## ... the effect on a cloud of stationary electrons is the same as the effect on a single stationary electron...

(... well, there is also the effect of the electrons on each other.)
 
  • #3
53
0
The effect on the beam is the same as the effect on a single electron with velocity ##v## ... the magnitude force is ##F=evB## and it points at right angles to both ##\vec v## and ##\vec B## ... the effect on a cloud of stationary electrons is the same as the effect on a single stationary electron...

(... well, there is also the effect of the electrons on each other.)

Thanks,

I have read elsewhere that a magnetic field has no effect on a stationary charged particle i.e. it does not cause a stationary charge to move or to aline to the magnetic field in any way.
 

Related Threads on Magnetic field on charged cloud

Replies
37
Views
3K
  • Last Post
Replies
8
Views
603
  • Last Post
Replies
3
Views
2K
  • Last Post
Replies
1
Views
3K
  • Last Post
Replies
4
Views
6K
  • Last Post
Replies
2
Views
3K
  • Last Post
Replies
16
Views
3K
  • Last Post
Replies
13
Views
33K
  • Last Post
Replies
1
Views
1K
  • Last Post
Replies
4
Views
2K
Top