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 ▸Explain how and why the diffraction pattern of electrons passing through a slit depends on their momentum.
The roar of a tiger in a zoo can be heard by visitors at the entrance, even though the tiger can not be seen because there is a hill in the way. Name and explain this effect.
Explain the difference between forced vibration and resonance in an oscillating object.
Why does a small puddle of water evaporate at room temperature, even though the temperature is way below the boiling point of water?