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Physics ­ Static electricity

Static electricity is charge `held' by an insulator or insulated conductor. It is
produced when two surfaces rub together.

Adding electron to an atom makes it negative
Taking electrons away from atom makes it positive.

Charging by friction:

Some insulators become charged by rubbing them with…

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Electrostatic Paint Sprayer:
The spray nozzle is connected to the positive terminal.
The metal panel is connected to the negative terminal.
The panel attracts the paint as they are opposite charge.
The paint droplets repel each other as they have the same charge so
they spread out to give an…

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