Answer An electron travels at a horizontal velocity of 5 x 10 m/s in
a vacuum between two charged plates 100 mm long and 20
mm apart, to which a p. d. of 30 V is applied. The charge on an
electron is 1.5 x 10"C and the mass of an electron is
9.1 x 10 kg
What size force will the electron experience while it passes
through the plates
b) What acceleration will this give to the electron?
If the positive plate is the lower one, in which direction will
the electron accelerate?
d) How long will it take for the electron to pass through the
plates?​