Thomson and Millikan's Experiments (HSC SSCE Physics): Quizzes

$v = \frac{E}{B}$

Electric & magnetic

$\frac{q}{m} = \frac{E}{rB^2}$

Very light or large charge

Measured their charge-to-mass ratio

Balancing weight with electric force

$q = \frac{mgd}{V}$

$1.60 \times 10^{-19}$ C

Integer multiples of smallest value

$m = \frac{q}{(q/m)}$