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AP EAMCET201724 Apr 2017Morning ShiftPhysicsElectrostaticsActual

A charged bead is sliding freely through a string held vertically under tension. An electric field is applied parallel to the string so that the bead stays at rest at the middle of the string. If the electric field is switched off momentarily and switched on again, then

Options

  1. Athe bead falls off momentarily and then stopped
  2. Bthe bead moves downwards and then moves upwards
  3. Cthe bead moves downwards with constant
  4. Dthe bead moves downwards with constant velocity

Correct answer

D. the bead moves downwards with constant velocity

Step-by-step solution

No solution. Refer to answer key.

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