Question #c2b2d

1 Answer
Apr 15, 2017

From Lorentz force Equation we know that total force vec F experienced by a charged particle, having charge q and velocity vec v, in an electric field vecE and magnetic field vecB is

vecF=q(vecE+vecvxxvecB)

In this case, the electron of charge e is stationary in a magnetic field. There is no electric field. As such first term vanishes.
Also we have vecv=0. Consequently the cross product of vectors velocity and magnetic field becomes 0.
We have
vecF=e(0xxvecB)
vecF=0.

In the absence of any force stationary electron remains stationary.