Answer
$=5.6\times10^{-14}N$ North
Work Step by Step
The electron’s velocity is perpendicular to the magnetic field, so the magnetic force is maximum. The magnitude is given in equation 20–4.
$$F_{max}=qvB=(1.60\times10^{-19}C)(7.75\times10^5m/s)(0.45T)$$
$$=5.6\times10^{-14}N$$
Use the right-hand rule, remembering that the electron is negatively charged. The force is directed to the north.
