What machines use static electricity?

Answer 1

Almost all electrical insulators that can hold static electrical charge. For example, rubbing amber with fur with produce static -- both amber and fur are good electrical insulators. Another common example will be an air balloon rubbed against your wool sweater or hair. Walking with insulating shoes across a rug on a dry winter day will do it too. You see the point -- electrical insulator in sliding contact with one another and then separated will do the job. Air dryness enhances the static generation because water vapor in air can neutralize the surface static charge.

Answer 2

Static electricity is caused by static electrical charges. For example by rubbing a piece of amber electrons are extracted from surface molecules due to the mechanical action. The molecules are positively charged and the amber starts to generate an electrostatic field.

Electrostatic Fields not only attracts (or repel) charged objects, but also create dipoles that are also influenced by the field. For example, let us consider a neutral piece of paper in the presence of an electrified piece of amber. Electrons from the piece of paper molecules are attracted by the amber while positive nuclei are repelled. Naturally the amber is not so strongly charged to divide electrons from nuclei (a huge force would be needed), but in average electrons are nearer to the amber and the nuclei gets far. What happens is roughly represented below, where --- represents a bond within the paper (that behaves like a string) and ---> the electrical field.

Surface of the paper

Nucleus -- electron

Nucleus -- electron -------> Amber (positively charged)

Nucleus -- electron

Since the charge is now neutral in average, but unbalanced as far as the spatial distribution is concerned, the paper is attracted by the charged amber.

Answer 3

van di graph generator

spray painting cars

Answer 4

hair,balloons

Answer 5

a drum