9. Electron travelling though two horizontal plates In the diagram P1 and P2 are two parallel horizontal plates that are 8.4 mm apart in a vacuum and have a potential
difference of 109 volts maintained between them, the upper plate being positive. Also, there is a horizontal magnetic field
of 0.029 T as shown.
X
X
X
X
electron
X
Tule
xd
x x x
X
x
x x x
x
x
beam X
X
P2 x
X x x X
A horizontal beam of electrons is directed between the plates so that it is moving at right angles to the magnetic field as
shown.
Determine the magnitude of the force due to the electric field acting on each electron