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A charged bead is capable of sliding fre...

A charged bead is capable of sliding freely through a string held vertically in 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

A

the bead moves downwards and stops as soon as the field is switched on

B

the bead moved downwards when the field is swithced off and moves upwards when the field is switched on

C

the bead moves downwards with constnat acceleration till it reaches the bottom of the string

D

the bead moves downwarsa with constant velocity till it reaches the bottom of the string

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The correct Answer is:
D
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