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STATIC ELECTRICITY by Mind Map: STATIC ELECTRICITY
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STATIC ELECTRICITY

Definition

It is the build up of electric charge on the surface of an object.

Causes

Contact-induced charge separation

example, a balloon rubbed against the hair becomes negatively charged; when near a wall, the charged balloon is attracted to positively charged particles in the wall, and can "cling" to it, appearing to be suspended against gravity

Heat-induced charge sepration

Heating generates a separation of charge in the atoms or molecules of certain materials,thus causing static

Charge-induced charge seperation

A charged object brought close to an electrically neutral object causes a separation of charge within the conductor,example,the Van de Graaf Generator

Pressure-induced charge seperation

The mechanical method of processing static charge in crystal molecules

Prevention

Attach a ground wire

Why?, The earth is a sea of electrons which neatralizes all static charges,except very strong charges,example,lightning

Produces

LIGHTNING

how?, It occurs as dark clouds contain many negative electron and since the ground,Earth,contains may positive electron,a lightning of negative elctrons strike on the ground surface to be neutralized