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How electrical resistance can be measured in copper and aluminium?
Wiki User
∙ 13y ago
Same as for any other substance:
Apply a voltage and measure the current flow.
(Resistance equals voltage divided by the current flow.)
Wiki User
∙ 13y ago
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Which material has a greater resistance aluminum or copper wire?
Aluminium wire has high resistance than Copper.
Why copper is used more than aluminum in day today life?
Copper is a metal that conducts electricity and is used in a majority of electrical appliances from toasters to mobile phones so in every day life copper is regularly used. Aluminium is only really used in day to day life in aluminium foil as its uses otherwise come from it being a light metal which is why it's used in aeroplanes. When copper was very high in price aluminium was used for electrical cables, but there are two problems - copper is a much better conductor of electricity, and aluminium has an oxide layer on the surface which makes it difficult to get good electrical contact. Copper is also used for water pipes as it is easy to solder and generally has better corrosion resistance.
How do you calculate copper wire resistance?
if we know resistivity of copper i.e is very small (1.68×10−8)transposing the definition to make resistance the subject (Pouillet's law):R is the electrical resistance of a uniform specimen of the material (measured in ohms, Ω) is the length of the piece of material (measured in metres, m)A is the cross-sectional area of the specimen (measured in square metres, m²).
Why do copper or aluminum wires generally used for electrical transmission and distribution purposes?
Both metals have a low resistance to conductivity. They are extremely flexible and do not degrade under electrical transmission as do other metals. They are less expensive than the best conductors, silver and gold.
Do aluminium and iron both conduct electricity?
Aluminium is a good thermal and electrical conductor, having 62% the conductivity of copper...
What metals are good conductors of electric current?
copper and aluminium are the most common, but aluminium isn't as good as copper because it puts to much resistance on the electricity causing it to heat up.
How many nano ohms transferred per meter in copper?
Gold has an electrical resistance of 22.14 nano ohms per meter (nΩ·m), while copper has an electrical resistance of 17.2 nΩ/m and silver has an electrical resistance of 15.87 nΩ/m.
Characteristics of copper?
Corrosion resistance and electrical conductivity. and its metal
What is metal usually used for?
Copper is frequently used for electrical wires. Aluminium is cheaper but breakable.
What are some examples of items with low conductivity?
Thermal resistance: diamond Electrical resistance: copper Optical resistance: quartz
When one terminal of the cell is joined by copper wire to the one terminal of bulband another terminal of cell with aluminium wire to the other terminal of bulb. Will the bulb glow Give reason for yo?
Both copper and aluminium wire will conduct electricity, so the bulb will glow. Aluminium is less efficient at conducting than copper. Copper-clad aluminium wire is electrical wire coated with a thin layer of copper.
Is aluminium used for water pipes and electrical wires?
Aluminium is not used for water pipes. It's not as elastic as Copper. Because aluminium is less expensive than copper, it is sometimes used for electrical wiring, but, because it corrodes much more easily than copper, much more care has to be taken a) to protect it from the atmosphere and b) to make connections that will be remain reliable over a long period of time. Overall, aluminium wire is not as easy to install so, for general purposes, copper wire is better.
