A particle of charge $q$ and mass $m$ is moving along the $x$ -axis with a velocity $v$ and enters a region of electric field $E$ and magnetic field $B$ as shown in figure below for which figure the net force on the charge may be zero
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(b) The charge will not experience any force if $|\overrightarrow {{F_e}} |\, = \,|\overrightarrow {{F_m}} |$. This condition is satisfied in option $(b)$ only.
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