Electric Pressure on a Charged Surface due to External EF

AI Thread Summary
The discussion centers on the effects of electric fields on charged surfaces, specifically addressing the role of parallel components of the electric field. It is argued that while parallel components can create shearing forces, they do not contribute to net pressure on the surface. The conversation highlights that pressure is generated by forces acting perpendicular to the surface area. Additionally, shear forces are acknowledged for their role in surface tension, but they do not exert pressure in the traditional sense. Overall, the distinction between shear forces and pressure due to normal forces is emphasized.
gracy
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Why he did not consider parallel force?Will parallel component of electric field not produce electric pressure on the surface?
 
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The parallel component can only produce/result in a shearing force ; zero net pressure. Or put another way, it is orthogonal to the direction necessary to produce movement.
 
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You mean shear force does not exert pressure?
 
gracy said:
You mean shear force does not exert pressure?
Shear force will be responsible for surface tension, as he said in the video. Pressure will be due to the force normal to the area.
 

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