Which surface is NOT listed as suitable for an electrostatic lifting device?

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Multiple Choice

Which surface is NOT listed as suitable for an electrostatic lifting device?

Explanation:
An electrostatic lifting device works by charging a film and creating an electrostatic field that attracts particles off a surface onto the film. Conductive surfaces, like metal, quickly drain the charge, collapsing the field and preventing effective lifting of particles. Nonconductive surfaces such as floors, walls, and paper can hold the charge long enough for the particles to be drawn to the film, making them suitable for this technique. That’s why metal is not listed as suitable.

An electrostatic lifting device works by charging a film and creating an electrostatic field that attracts particles off a surface onto the film. Conductive surfaces, like metal, quickly drain the charge, collapsing the field and preventing effective lifting of particles. Nonconductive surfaces such as floors, walls, and paper can hold the charge long enough for the particles to be drawn to the film, making them suitable for this technique. That’s why metal is not listed as suitable.

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