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Two infinite sheets carrying current in same direction (of equal current per unit length K ) are separated by a distance d . A proton is released from a point between the plates with a velocity parallel to the sheets but perpendicular to the direction of current in the sheets. Then the path of the proton is

Options

  1. Acircle
  2. Bhelix
  3. Cstraight line
  4. Dstraight line only if it is released from a point exactly midway between the two plates.

Correct answer

C. straight line

Step-by-step solution

As net magnetic field due to sheets will be zero, net force acting on the proton also becomes zero, it will continue to move on a straight line. ∵ F → = q V → × B →

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