An electron is traveling at a velocity of 500m/s perpendicular to a uniform magnetic field. A force of magnitude 4.32 x10^(-16) N is acting on the electron, what is the magnetic flux density of the field?
F=BQv so B=F/Qv (Q is the charge of an electron, 1.6 x10-19 C) so B=4.32 x10-16 / (1.6 x10-19 x 500) = 5.4 T
CJ
Related Physics A Level answers
All answers ▸The tip of each prong of a tuning fork emitting a note of 320Hz vibrates in SHM with an amplitude of 0.50mm. What is the speed of each tip when its displacement is zero?
Discuss how the graph of orbital velocities in rotational galaxies against distance from the galactic centre implies the existence of dark matter.
What are the SUVAT equations and how can I remember them?
What is EMF? How do we test for it?