Static Electricity, Insulators, Conductors

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How is static electricity created?

An electrostatic charge is generated when both surfaces are contacted and separated, and at least one surface has a high current resistance (hence an electrical insulator). The electrostatic effect is familiar to most people because one can perceive, hear, even when too much charge is close to a large electric conductor (for example, a grounded path) or an excess charge with opposite polarity (positive or negative) The area will see the spark).


What are insulators?

The insulator is an internal charge of the material; do not flow freely, so it is difficult to flow current; under the influence of the electric field. There is never a perfect insulator, but some materials such as glass, paper and teflon; it has a high resistivity, and most plastics are good examples of insulators. This material can be used as a practical and safe insulator for low to medium voltage (hundreds or even thousands of volts).

What are conductors?

A material or substance having the ability to carry charge from one place is called a conductor. Silver is one of the best conductors, but others include aluminum, copper, iron, coal (carbon impregnated material) and some liquids.



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