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Copper is a material - although you can make objects from it.
Resistivity is a property of materials.
Resistance is a property of objects - it depends on the resistivity of the material the object is made of, the shape and size of the object, and also of where you connect to take your measurement.
With all this in mind:
Copper has a low resistivity.
Copper objects tend to have low resistance compared to other objects of similar shape and size made of materials with a higher resistivity
You can still achieve quite high resistances with a long enough piece of very thin copper wire.
What else can I help you with?
Why is copper wire not used in potentiometer?
Copper wire is not used in potentiometers because copper is highly conductive and would not provide enough resistance for the potentiometer to function properly. Instead, materials with higher resistance, such as nichrome or a graphite-based material, are used to create the variable resistance needed in a potentiometer.
When a piece of copper and another of germanium are cooled from room temperature to 800 K then the resistance?
The resistance of the copper piece will increase, while the resistance of the germanium piece will decrease as they are both cooled from room temperature to 800 K. This is because the resistivity of metals like copper generally increases with decreasing temperature, while for semiconductors like germanium, the resistivity decreases with decreasing temperature.
Five factors that affect resistance?
Electrical Resistance depends on three factors: Resistivity; Area; Length.Resistivity is the property of the matter. More Resistivity means more resistance.More Area means less resistance.More length means more resistance.R= Resistivity. Length/Area
What are some examples of items with low conductivity?
Thermal resistance: diamond Electrical resistance: copper Optical resistance: quartz
What is an alloy of copper and nickel used in electrical resistance wire?
Alloy wires of copper and nickel come in many varieties and are sometimes called cupro-nickels.They can be found containing:Copper with 10% nickelCopper with 30% nickelCopper with 25% nickel with 0.05-0.4% manganeseCopper with 45% nickel (also known as constantan)Alloy wire containing both copper and nickel retain their strength at elevated temperatures compared to copper alloys without nickel. Also, they are beneficial in outstanding resistance to corrosion, particularly from sea water.
Is resistivity the same for all materials with the same length?
Yes, because the resistivity does not depends on the length of any materials. Resistivity is constant.-Ariel DUmancas-No. The resistance in different materials is different. For example, Copper has a low resistance to electricity compared to plastic. This is also one reason why copper is used instead of plastic in wires. Knowing the resistance of different material helps decide what material should be use for different objects (like copper for wires in plastics)
Would have the same resistance as a copper wire that is 4 m long and has a cross-sectional area of 0.066 cm2?
A wire with the same resistance as the given copper wire would have the same resistivity as copper. The resistance of a wire is dependent on its resistivity, length, and cross-sectional area. To calculate the resistance of a wire, use the formula R = (resistivity * length) / area; however, without the specific resistivity value, an exact value cannot be provided.
Can copper and alluminium wire of same length and diameter have same resistance?
No, copper and aluminum wire of the same length and diameter will not have the same resistance. Copper has a lower resistivity than aluminum, so a copper wire will have lower resistance compared to an aluminum wire of the same length and diameter.
Why copper strips are used in meter bridge wire?
Copper strips are used in a meter bridge wire due to their excellent conductivity, which allows for accurate measurement of resistance in the wire. The low resistance of copper helps minimize any potential measurement errors caused by the resistance of the connecting wires.
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 specific resistance and melting point of fuse?
low resistivity and low melting point.
What is specific-resistance?
Electrical resistivity is a measure of how a material opposes the flow of electric current. Copper is used for electrical lines because it has a low resistance relative to its cost. Gold and silver also have a low resistance, but imagine how expensive the power cord for your computer would be if it were made of gold!
Why aren't resistors made from copper?
Resistors are typically made from materials like carbon, metal oxides, or metal films due to their higher resistivity compared to copper. Using a material with higher resistivity allows for more precise control and customization of the resistance value in the resistor. Copper is commonly used for conductors due to its low resistivity.
How do you calculate resistivity of copper wire?
(rho) or resistivity of a "wire" is calculated using this formule:rho = Resistance x Area / length of materialthe resistivity of copper is 1.7 x 10 -8 ohm/mResistivity is measured in ohm metres, NOT ohms per metre!
Why is copper wire not used in potentiometer?
Copper wire is not used in potentiometers because copper is highly conductive and would not provide enough resistance for the potentiometer to function properly. Instead, materials with higher resistance, such as nichrome or a graphite-based material, are used to create the variable resistance needed in a potentiometer.
Why is copper used for electricial wiring?
Because copper has a very low electrical resistivity of 16.78 nΩ·m, meaning it's easier for electricity to pass through it. For comparison, nickel has a resistivity of 69.3 nΩ·m and iron's resistivity is 96.1 nΩ·m.
Is resistivity of a good conductor high or low?
The resistivity of a good conductor is low. Good conductors have a low resistance to the flow of electric current due to their high conductivity, allowing electricity to pass through easily.
