An electron is accelerated through $2\mathrm{.}15103$ V from rest and then enters a uniform $2\mathrm{.}20-$T magnetic field.

$($a$)$ What is the maximum magnitude of the magnetic force this particle can experience?

$9\mathrm{.}69$e$-12$ N

$($b$)$ What is the minimum magnitude of the magnetic force this particle can experience?

$0$ N