An electron is released from the origin at a place where a uniform electric field E and a uniform magnetic field B exist along the negative y-axis and the negative z-axis respectively. Find the displacement of the electron along the y-axis when its velocity becomes perpendicular to the electric field for the first time. (Take E=20 V/m and B=0.5 mT, charge of electron e=1.6×10−19 C , Mass of electron m=10−30 kg)

An electron is released from the origin at a place where a uniform ele

1.	An electron is released from the origin at a place where a uniform electric field E and a uniform magnetic field B exist along the negative y-axis and the negative z-axis respectively. Find the displacement of the electron along the y-axis when its velocity becomes perpendicular to the electric field for the first time. (Take E=20 V/m and B=0.5 mT, charge of electron e=1.6×10−19 C , Mass of electron m=10−30 kg)
Answer» An electron is released from the origin at a place where a uniform electric field $E$ and a uniform magnetic field $B$ exist along the negative $y$ -axis and the negative $z$ -axis respectively. Find the displacement of the electron along the $y$ -axis when its velocity becomes perpendicular to the electric field for the first time. (Take $E = 20 V/m$ and $B = 0.5 mT$ , charge of electron $e = 1.6 \times 10^{- 19} C$ , Mass of electron $m = 10^{- 30} kg$ )

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