What is the best electrical resistance as an example?

Question

Like conductor examples are copper and silver what are the examples of an electrical resistor

Answer 1

If you're asking about materials to form a finite resistance, I'd suggest tungsten or nichrome. One of the typical functions of a resistor is to generate heat by dissipating electrical power. In filament light bulbs, the temperature is high enough that you get visible light. A critical characteristic in such uses is the strength of the resistor material, and a high melting point. For the extremely high temperatures of a light bulb, tungsten is the choice. For lower temperatires, such as room heater and heat lamps, nichrome (a nickel-chromium alloy) is commonly used.

Answer 2

Examples Of Electrical Resistance

Answer 3

Well, current can only flow when there are charge carriers: electrons in the case of copper wires, H+ and OH- ions in the case of water.

Vacuum provides the best electrical resistance, because when there are no atoms, there will be no charge carriers. So the current will be zero even if there is a strong electrical field in it. The resistance is therefore infinity.

If you insist on matter/material, then I suppose things like teflon, silicon dioxide will fit the bill. They are much better than plastic. There are many other good insulators, such as PVC which are found in your cables, porcelain, etc.

Answer 4

Some materials such as silicon dioxide or teflon are very good electrical insulators. A much larger class of materials, for example rubber-like polymers and most plastics are still "good enough" to insulate electrical wiring and cables even though they may have lower bulk resistivity. These materials can serve as practical and safe insulators for low to moderate voltages (hundreds, or even thousands, of volts).

High-voltage insulators

High-voltage insulators used for high-voltage power transmission are made from glass, porcelain, or composite polymer materials. Porcelain insulators are made from clay, quartz or alumina and feldspar, and are covered with a smooth glaze to shed dirt. Insulators made from porcelain rich in alumina are used where high mechanical strength is a criterion. Glass insulators were (and in some places still are) used to suspend electrical power lines. Some insulator manufacturers stopped making glass insulators in the late 1960s, switching to various ceramic and, more recently, composite materials.

Recently, some electric utilities have begun converting to polymer composite materials for some types of insulators which consist of a central rod made of fibre reinforced plastic and an outer weathershed made of silicone rubber or EPDM. Composite insulators are less costly, lighter in weight, and have excellent hydrophobic capability. This combination makes them ideal for service in polluted areas. However, these materials do not yet have the long-term proven service life of glass and porcelain.

Answer 5

Often "insulator" is used as the opposite of "conductor", porcelain and plastics are often used as insulators, Teflon plastic is one of the best insulators.
For cases where one wants to retard, but not completely stop the flow of electricity, Nichrome and carbon are often used for electrical resistors.

Answer 6

hi,
glass,mica,quartz these are the best insultor or resistor for flow of electron.because the outermost shell in the atom having higher electron.so energy level is high and the electron cant jump to conduction band

Answer 7

Plastic is the most common of resistor materials...
dry wood is a natural example

Answer 8

Do you mean insulators ?. If yes, paper is the best example.

Answer 9

Vacuum or air

Answer 10

porcelain