0
Does copper have a higher resistance to electron flow than aluminum?
Wiki User
∙ 11y ago
Tungsten has high resistance, here is an example, in incandescent light bulb,there is a filament made up of tungsten (metal),when we turn on the switch the electricity flows through the filament making it heat up, NOW what heats up the filament is TUNGSTEN's resistance, HOW AND WHY:
1)Tungten has a high resistance, which mean that more electrons accumulate, as more electrons accumulate it heats up the filament due to resistance, it's just like : when you are cold you rub your hand together to make them warm there is a force called friction that heats up your hands due to the contant rubbing, same is here, when electrons accumulate, they become more resistant, i.e unable to move quickly, so when they can't move easily they began interacting and producing heat, the tungsten metal that is known to have high resistance helps it heat up and light up up as well, if tungsten was not resistant it would melt up at high temperature.
Wiki User
∙ 11y ago
Wiki User
∙ 14y agoThe resistance of a tungsten light bulb is greater than the resistance of a copper wire.
In addition, as the bulb get hotter, the resistance increases, due to the positive resistance to temperature coefficient of the filament.
Wiki User
∙ 13y agoCopper is second in conduction only to silver, but as silver oxidizes (forms a non-conductive layer) easily, copper is considered the most practical conductor.
As conduction is essentially the opposite of resistance, copper has a lower resistance than iron.
Wiki User
∙ 11y agoNo, copper has a lower resistance to electron flow than aluminum for a given cross sectional area. So if two cables have the same diameter, the copper one will conduct electricity better than aluminum. However, an aluminum cable of the same weight as copper will conduct electricity better than copper. It is for this reason that aluminum is often used for overhead transmission lines, resulting in a lower weight than similar performing copper cable.
Wiki User
∙ 13y agoLower
Add your answer:
Earn +20 pts
What are the advantages of using copper compared to aluminium for transmission lines?
Copper is a better conductor than aluminum. Two wires with the same cross-sectional area, or any two constructs with the same physical shape and size, one fabricated from aluminum and the other from copper, the one made of aluminum always has higher ohmic resistance.
Is aluminum wiring as good as copper wiring?
In general, no.Aluminum wiring has a higher resistance and therefore higher losses than copper.Aluminum wire connections must be carefully cleaned to remove oxides and a special anti-corrosion paste applied because of aluminum's reactivity with the oxygen in air. These oxides can cause a connection to overheat and fail, possibly causing a fire.For the same ampacity, aluminum wire must be larger in diameter, making for larger cables.There was a period where aluminum wire was used extensively when the price of copper was very high, but many of the aluminum installations were later retrofitted with copper for the above reasons.There are a few cases where aluminum is the better choice. High voltage transmission lines are usually aluminum with a steel or composite core. The higher losses are offset by the much lighter weight of the aluminum, allowing towers to be lighter and spaced much further apart, lowering costs.
Why are copper wires used in as connecting wires?
The copper wires used connect. Because conductivity of Cooper higher than aluminium but price of Cooper higher than aluminum. If compare between copper and aluminium cable can see at the same current rate diameter of aluminium cable is larger than copper cable.
Why electric wires made up of copper or aluminium?
Probably not. Both gold and aluminum have poorer conductivity than copper. If copper is rated at 100, then aluminum is 57 and gold is 65. Gold is sometimes used to electroplate electronic connectors, not so much because of is conductivity, but because it is so resistant to oxidation. Aluminum is a good choice where weight is a factor, such as in high-voltage transmission lines. Other than in a few special cases, copper is the better material for electrical wiring.
Why copper electrode does not melt while steel melts in spot welding?
Copper has a higher melting point than steel, so it does not melt during spot welding. Additionally, copper has higher thermal conductivity, which allows it to distribute heat more efficiently and prevent it from concentrating in one spot. This combination of a higher melting point and better heat dissipation makes copper electrodes suitable for spot welding applications.
Does aluminum have lower resistance than copper?
No, aluminum has a higher resistance than copper.
Does a copper heat sink or an aluminum one with a base made of copper work any better than a pure aluminum one?
The thermal conductivity of copper is higher than that of aluminum, and silver is better than either copper or aluminum.
What affects the resistance of a conductor?
The length and the material that the conductor is made from. Different wire sizes have different ohm/foot. The longer the length of the conductor the higher the ohms/foot. Temperature also affects the resistance. Silver has the least resistance, followed by Copper, then Gold, then Aluminum. Here are some published resistances in micro ohm-cm: Silver - 1.6 Copper - 1.7 Gold - 2.2 Aluminum - 2.7
What are the advantages of using copper compared to aluminium for transmission lines?
Copper is a better conductor than aluminum. Two wires with the same cross-sectional area, or any two constructs with the same physical shape and size, one fabricated from aluminum and the other from copper, the one made of aluminum always has higher ohmic resistance.
From copper and manganin which has higher resistance?
The question is actually wrong, they can both have the same resistance if configured differently, the real question should be which has a higher resistivity which is the electrical resistance found in a standard amount of each material. In this case Manganin has a higher resistivity than copper.
What is an electrical wire made out of?
Usually copper, but can also be made of aluminum. Copper has a higher melting point and better resistance to corrosion, however is more expensive than aluminum (£1600/tonne)
Does copper have a higher heat capacity than aluminum and iron and lead and zinc?
no
Is aluminum wiring as good as copper wiring?
In general, no.Aluminum wiring has a higher resistance and therefore higher losses than copper.Aluminum wire connections must be carefully cleaned to remove oxides and a special anti-corrosion paste applied because of aluminum's reactivity with the oxygen in air. These oxides can cause a connection to overheat and fail, possibly causing a fire.For the same ampacity, aluminum wire must be larger in diameter, making for larger cables.There was a period where aluminum wire was used extensively when the price of copper was very high, but many of the aluminum installations were later retrofitted with copper for the above reasons.There are a few cases where aluminum is the better choice. High voltage transmission lines are usually aluminum with a steel or composite core. The higher losses are offset by the much lighter weight of the aluminum, allowing towers to be lighter and spaced much further apart, lowering costs.
How are a copper wire and aluminum foil alike?
negative charges can't move through them
Why does more current flow through the bulb when the reed switch was replaced with copper wire?
Copper wire has apparently lower resistance than the reed switch. The lower electric resistance, the higher electric current.
What makes a better conductor copper or iron?
Copper is better conductor than iron because copper has higher electron affinity of 1.22948 eV than iron which is 0.16299 eV.
Why does aluminum have a higher melting temperature than sodium?
This is a difficult question to answer- one factor is that sodium has only one valence electron and aluminum has three so the bonding is stronger.
