Static electricity (EdExcel)

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13 Terms

1

what is static electricity?

Static electricity is the buildup of electric charge on the surface of objects due to contact and friction with other materials.


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2

Like charges always?

repel

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3

Opposite charges always?

attract

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4

electric charge is measured in?

coulombs

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5

what are the 3 methods of charging

1- i induction

2- friction

3-conduction

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6

what is induction?

When a charged material is brought near an uncharged material, it will induce a charge in the uncharged material.

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7

what is friction?

  • Rubbing two insulating materials together (e.g., rubbing a balloon against hair).

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8

what is conduction?

Direct contact between a charged object and a conductor (charges transfer).

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9

what is electroscope?

An electroscope is a device used to detect the presence and type of electric charge in an object

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10

what are electrostatic precipitators?

Electrostatic precipitators are devices used in industries to remove particles like ash and smoke from exhaust gases

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11

how do inkjet printers use static electricity?

Inkjet printers use static electricity to direct droplets of ink onto paper.

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12

state some dangers of static electricity

fire and explosion,industrial accidents and health risks.

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13

what does earthing do?

The earth wire provides a low-resistance path to the earth. If the current becomes too large, it will cause a surge in the earth wire, blowing the fuse. The fuse then cuts off the supply of electricity, making the appliance safe.

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