Specific charge of the electron (AQA A-Level Physics): Flashcards

Charge-to-mass ratio

Uniform magnetic field

Magnetic force acts as centripetal force

Excited gas atoms emit photons on de-excitation

$\frac{e}{m} = \frac{2V}{B^2 r^2}$

Perpendicular electric & magnetic fields

$\frac{e}{m} = \frac{v^2}{2B^2 d^2 V_a}$

$1.76 \times 10^{11}$ C kg$^{-1}$

~1800 times larger

Constant specific charge regardless of gas used