Can an electron at rest in a magnetic field be set into motion by the magnetic field? electric field?

Question

a. no for both
b. depends on the intensity of the fields, which is not provided in this problem
c. yes; no
d. yes for both
e. none of these
f. no, yes

Answer 1

The force on a charge (electron) from a magnetic field is proportional to q x v (law of Biot-Savart). If v = 0, there is no force.

In an electric field, the force on a charge is proportional to q x E, where E is the field strength. That force will cause the electron to move.

The answer is f.

Answer 2

Let me try to explain this without all of those fancy letters. Basically, an Electron at rest would be like a country with its guard down, and an enemy about to attack it. Of course it can set itself into motion and get the upper hand on the enemy, but usually it needs the push. Something that drives it to fight. Now, does that enemy have a driving need as well? If so, that could change the odds. Now, if that Electron is in a "Magnetic Field", it will probably have allies. I of course do not need allies. It is good of course to have countries willing to sacrifice themselves for their surpreme master. Anyway, an Electric Field would probably be much more widespread, but not as powerful. Hopefully the country you are facing isn't America. I suppose that explains it all. Oh, basically I mean "E".

Suck it.

Answer 3

an electron which is at rest position have no electric field so it will not interact with magnetic field, its not possible to set an electron in motion which is at rest position..

Answer 4

No, confident, assuming the magnetic field isn't shifting. the previous answer quoted the Lorentz stress regulation, F = Eq + qv X B. the 2nd term, qv X B, is the magnetic section. The "v" (velocity) potential there could be relative action between the cost (i.e., the electron) and the sector B for a stress to advance. in fact, v could be a minimum of partly "crosswise" to the direction of B because of the fact the vector bypass-product represented by potential of "X" is 0 whilst v is alongside B.

Answer 5

There's no such thing as an electron at rest!
And besides an electric current generates a magnetic field!

Answer 6

I say (f).
A stationary electron in a magnetic field will remain stationary.
A stationary electron in an electric field will simply accelerate to the positive pole.

Answer 7

D. Yes for both.

Electricity flows by the passing of electrons, so that an easy one.

And, a magnet has flux lines, which are extended orbits of electrons.

Answer 8

f.