An electron is moving along the positive $x$-axis. If the uniform magnetic field is applied parallel to the negative $z$-axis. then
$A.$ The electron will experience magnetic force along positive $y$-axis
$B.$ The electron will experience magnetic force along negative $y$-axis
$C.$ The electron will not experience any force in magnetic field
$D.$ The electron will continue to move along the positive $x$-axis
$E.$ The electron will move along circular path in magnetic field
Choose the correct answer from the options given below:
JEE MAIN 2023, Medium
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$\overrightarrow{ F }=- e (\overrightarrow{ v } \times \overrightarrow{ B })$
Force will be along $-ve$ $y-$axis.
As magnetic force is $\perp$ to velocity, path of electron must be a circle.
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