If an electric field is applied parallel to the surface of a liquid and this surface has a net charge then the surface and so the liquid will move in response to the field. This is electrocapillary flow, an example of electrocapillarity.
If an electric field is applied parallel to the surface of a liquid and this surface has a net charge then the surface and so the liquid will move in response to the field. This is electrocapillary flow, an example of electrocapillarity.
Source: Wikipedia "Electrocapillarity" · CC BY-SA 4.0
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