An electron is moving along positive $x$-axis.Auniform electric field exists towards negative $y$-axis. What should be the direction of magnetic field of suitable magnitude so that net force of electron is zero
Apositive $z$- axis
Bnegative $z$-axis
Cpositive $y$-axis
Dnegative $y$-axis
Medium
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Bnegative $z$-axis
b $\overrightarrow{F_{e}}+\overrightarrow{F_{m}}=0$
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