Physics

Problem

An electron (charge magnitude

1.60\times10^{-19}\,\text{C}

) travels at

4.0\times10^{6}\,\text{m}\,\text{s}^{-1}

perpendicular to a uniform magnetic field of

25\,\text{mT}

. What is the magnitude of the magnetic force on the electron? a)

4.0\times10^{-14}\,\text{N}

1.6\times10^{-13}\,\text{N}

1.6\times10^{-14}\,\text{N}

8.0\times10^{-15}\,\text{N}