An electron is moving along $+x$ direction with a velocity of $6 \times 10^{6}\, ms ^{-1}$. It enters a region of uniform electric field of $300 \,V / cm$ pointing along $+ y$ direction. The magnitude and direction of the magnetic field set up in this region such that the electron keeps moving along the $x$ direction will be
An electron is moving along $+x$ direction with a velocity of $6 \times 10^{6}\, ms ^{-1}$. It enters a region of uniform electric field of $300 \,V / cm$ pointing along $+ y$ direction. The magnitude and direction of the magnetic field set up in this region such that the electron keeps moving along the $x$ direction will be
- [JEE MAIN 2020]
- A
$5 \times 10^{-3} T ,$ along $+ z$ direction
- B
$3 \times 10^{-4} T ,$ along $- z$ direction
- C
$3 \times 10^{-4} T ,$ along $+ z$ direction
- D
$5 \times 10^{-3} T ,$ along $- z$ direction
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- [AIIMS 2010]
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