If you lower the temperature, the conductor carrying the flow of charge will offer less resistance. An example would be to cool the wire with liquid nitrogen. At this temperature, your wire would offer very little resistance. Of course, to understand the answer you must know what resistance is - it is molecular friction. In the case of conductivity, it is the amount of energy used to bump an electron from one atom to the next. The hotter the conductor, the more energy is required to generate current. And consequently, when your wire gets to hot, it will melt. When energy is used to generate a current, energy is also lost in the form of heat. Now when you cool the conductor to extreme low temperates, it is very akin to adding oil to an engine. The better the grade of oil, the better the engine runs and the less the wear and tear on the engine caused by friction and heat.
Also, if you increase the cross sectional area and decrease the length of the wire, it will lower the electrical resistance of the wire - naturally. But what if you can't do that? What if you have to transfer a certain power requirement over a certain distance? Then you would try to find a way to lower the temperature of the wire. One such way to do this is to run the wire through the ground. After a certain depth, the average temperature underground is around fifty degrees. Also, if you run DC through the wire instead of AC, a great deal of less energy is lost. The one and only reason power companies don't do this is that it is much easier to step up and step down voltages with AC than it is to do so with DC. As far as running wire underground, although it is done in major metropolitan areas such as New York, it is not cost effective. It is far more cost effective for both construction and maintenance to run wire above ground. Yet the ironic thing is that, in the end, we still spend more money on power transmission because we choose NOT to lower resistance in a wire.
In your hypothetical dream world where every wire is surrounded in nitrogen to bring the resistance down, what is this going to cost the consumer? The student asked "What would lower electrical resistance of a wire?" Short and sweet answer. Increasing the cross sectional area and shorten the length of the wire. If you have to to transfer a certain power requirement over a certain distance then you increase the conductor size to overcome the I squared R loss. How do transmission companies lower the temperature of their wires. They don't. The cables are sized to the calculated load. Wiring in the real world is much different than experimental wiring in a laboratory
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Increasing the cross sectional area and shorten the length of the wire.
A good conductor will pass electricity with little or no resistance. Resistance will cause the voltage to drop as the current increases. The least resistance will cause the least drop in voltage and is therefore a good conductor.
Have a little think about what the purpose of a table mat is and you'll get your answer.
A material that transmits nearly all the light in a ray because it offers little resistance to the light is called transparency.
Heat energy can be transfered through a conductor or medium, in three ways. Radiation, which is how the sun transfers energy, through waves. Convection, which is how wind works, the transfer of heat by mixing particles together. Conduction, which is how your hand warms up when someone touches it. The particles transfer their heat energy to adjacent particles.
Wood is a poor conductor(non-electrolyte) because it doesn't have free moving ions to conduct the electricity.
Yes- you have suggested a correct working definition for a conductor.
Silver is a conductor of electricity, meaning it allows the flow of electric current with very little resistance. It is widely used in electrical wiring and electronics for this reason.
This is called a conductor.
An electrical insulator is a material that resists electric current, and will not allow it to flow easily. Examples include glass and most ceramics. An electrical conductor is a material that offers very little resistance to electric current, allowing it to flow freely and easily. Most metals make excellent electrical conductors.
Steel is a good conductor of electricity because of its crystal structure that allows electrons to move freely throughout the material. This enables the flow of electric current with little resistance, making steel an efficient conductor for practical applications.
No, electric conductors do not block electricity. In fact, they are designed to allow the flow of electricity through them. Conductors like copper and aluminum have high electrical conductivity and are used to transmit electricity efficiently.
A: As current approaches infinity on a device it is known as a current source.
An excellent conductor is a material that allows electric current to flow through it with little resistance. Good examples of excellent conductors include metals like copper, silver, and gold. These materials are used in various electrical applications due to their high conductivity.
A good conductor will pass electricity with little or no resistance. Resistance will cause the voltage to drop as the current increases. The least resistance will cause the least drop in voltage and is therefore a good conductor.
Yes, conductors offer very little resistance to the flow of electric current due to their ability to easily transfer electrons. This is why materials like copper and gold are commonly used as conductors in electrical circuits.
Yes- you have suggested a correct working definition for a conductor.
You need to define your querstion a little more. Are we talking about an electric current, or a static charge?