An electron is travelling along the $x$-direction. It encounters a magnetic field in the $y$-direction. Its subsequent motion will be
AIIMS 2003, Easy
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(b) $\overrightarrow F = - e(\overrightarrow v \times \overrightarrow B )$ $==>$ $\overrightarrow F = - e[v\hat i \times B\hat j] = evB[ - \hat k]$
i.e. Force on electron is acting towards negative $z$-axis. Hence particle will move on a circle in $xz$-plane.
i.e. Force on electron is acting towards negative $z$-axis. Hence particle will move on a circle in $xz$-plane.
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