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A Water of mass 3.2xx10^(-18)kg and car...

A Water of mass `3.2xx10^(-18)kg` and carrying a charge of `1.6xx10^(-19)C` is suspended stationary betwaeen two plates of an electric field. Given `g=10 m//s^(2)`, the intensity of the electric field required is

A

`2V//m`

B

`200V//m`

C

`20V//m`

D

`2000V//m`

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The correct Answer is:
B

`mg-qE`
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