- #1
Stryker321
- 2
- 0
A beam of electrons is accelerated through a potential difference of 11kV before entering a velocity selector. If the B-field of the velocity selector is perpendicular to the velocity and has a value of 0.05 T, what value of the E-field is required (in the magnetic field region) if the particles are to be undeflected?
What I know:
F = qvB
and
F = qE
Therefore E = vB
But how on Earth do I find the velocity? Please help!
What I know:
F = qvB
and
F = qE
Therefore E = vB
But how on Earth do I find the velocity? Please help!