An electron moves in a circular path perpendicular to a uniform magnetic field with a magnitude of $2\mathrm{.}00$mT$.$

If the speed of the electron is $1\mathrm{.}50$E$7$ m$/$s$,$ determine $($a$)$ the radius of the circular path:Question Blank $1$ of $2($b$)$ The time interval required to complete one revolution.Question Blank $2$ of $2$