10. Electron travelling though two horizontal plates In the diagram P1 and P2 are two parallel horizontal plates in a vacuum and have a potential difference of V volts
maintained between them, the upper plate being positive. Also, there is a horizontal magnetic field as shown.
x
x
x
xd
electron
beam
P2 z
x
x
NNN
NNN
x
* *
x
The direction of the magnetic force acting on the electron is
Select one:
In the same direction the electron is travelling
O a
O b. Down the page
Oc. Out of the page
Od Into the page
O e. Up the page
Of in the opposite direction to the electron