Physics

Problem

An electron (charge

-1.6\times10^{-19}\,\text{C}

) enters a region with velocity

\vec v = 2.0\times10^{6}\,\hat i\,\text{m s}^{-1}

in a uniform magnetic field

\vec B = 0.30\,\hat k\,\text{T}

. What is the magnetic force acting on the electron? a)

-9.6\times10^{-14}\,\hat j\,\text{N}

+9.6\times10^{-14}\,\hat k\,\text{N}

+9.6\times10^{-14}\,\hat j\,\text{N}

+3.2\times10^{-13}\,\hat j\,\text{N}