A homogeneous electric field $E$ and a uniform magnetic field $\mathop B\limits^ \to $ are pointing in the same direction. A proton is projected with its velocity parallel to $\mathop E\limits^ \to $. It will
  • A
    Go on moving in the same direction with increasing velocity
  • B
    Go on moving in the same direction with constant velocity
  • C
    Turn to its right
  • D
    Turn to its left
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