189. According to the figure below, a uniform electric field and a magnetic field are perpendicular to each other in a medium, and a positively charged particle moves in that space with velocity $\vec{V}$. In which direction should it move so that the net force on it is zero? (Neglect the weight of the particle.) [Figure: Diagram showing directions A (up), B (right), C (down), D (left), with electric field $\vec{E}$ pointing out of the page, magnetic field $\vec{B}$ pointing left, and velocity vectors $\vec{v}$ shown in multiple directions.] (1) $A$ (2) $B$ (3) $C$ (4) $D$
\textbf{189.} According to the figure below, a uniform electric field and a magnetic field are perpendicular to each other in a medium, and a positively charged particle moves in that space with velocity $\vec{V}$. In which direction should it move so that the net force on it is zero? (Neglect the weight of the particle.)
\textit{[Figure: Diagram showing directions A (up), B (right), C (down), D (left), with electric field $\vec{E}$ pointing out of the page, magnetic field $\vec{B}$ pointing left, and velocity vectors $\vec{v}$ shown in multiple directions.]}
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(1) $A$ \hspace{1cm} (2) $B$ \hspace{1cm} (3) $C$ \hspace{1cm} (4) $D$
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