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Can you use copper wire instead of eureka wire in finding its resistivity?
Yes, you can use copper wire instead of eureka wire to determine resistivity by measuring its resistance, length, and cross-sectional area. However, keep in mind that the resistivity values for copper will be different from eureka wire, so you will need to account for that difference in your calculations.
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.
Why fuse has high resistivity?
Fuses have high resistivity because they are typically made of materials like copper, silver, or alloys which have inherently high resistivity. This property allows the fuse to generate heat when current flows through it, ultimately leading to melting and breaking the circuit in case of a fault. The high resistivity ensures that the fuse can handle the current without immediately melting under normal operating conditions.
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.
How many times is the resistivity of an insulator greater than a metal?
That depends on the specific material of the insulator versus the specific material of the metal. But the answer is easily in the millions. This is your lucky day! Just for you, today, we're having a special. I went and found a list with actual numbers and everything, and I compared glass with copper. Depending on the composition of the glass, the ratio of resistivities is between 5.95 billion billion and 5.85 thousand billion billion. I have to thank you for posting this question, because I've never looked at a list of these before, and I found some more interesting comparisons. (The actual numbers are down at the bottom.) -- Silver, the best conductor by just a bit, has 5.4% less resistivity than copper. -- Gold . . . 45.2% greater resistivity than copper -- Iron . . . 4.1 times the resistivity of Gold, 6.0 times that of Copper -- Lead . . . 2.2 times the resistivity of Iron, 13.1 times that of Copper -- Nichrome, the resistor wire used for the heating coil in a toaster . . . 5 times the resistivity of Lead, 65.5 times that of Copper -- Teflon . . . 1 billion to 10 thousand billion times the resistivity of Glass, 5.95 million trillion trillion to 5.95 hundred million trillion trillion times that of Copper ==================================== Silver. . . . . 1.59 x 10-8 ohm-meter Copper . . . 1.68 x 10-8 Gold. . . . . . 2.44 x 10-8 Iron . . . . . . 1.0 x 10-7 Lead . . . . . 2.2 x 10-7 Nichrome . . 1.1 x 10-6 Glass . . . . . 1011 to 1014 Teflon. . . . . 1023 to 1025
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.
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.
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 the best known conductor?
The best electrical conductor known is silver, not copper. Electrical resistivity of silver: 1,59.10-8 ohm.m Electrical resistivity of copper: 1,68.10-8 ohm.m A good electrical conductor has a very low electrical resistivity and a high electrical conductivity (the same principles for the thermal conductivity).
Can you use copper wire instead of eureka wire in finding its resistivity?
Yes, you can use copper wire instead of eureka wire to determine resistivity by measuring its resistance, length, and cross-sectional area. However, keep in mind that the resistivity values for copper will be different from eureka wire, so you will need to account for that difference in your calculations.
Which one of the following has the lowet resistivity -aluminium -copper -steel -lead?
Copper, aluminum, steel and lead in that order.
What is the resistivity of copper at 75 degrees?
The resistivity of copper at 75 degrees Celsius is approximately 1.68 x 10^-8 ohm-meters. Resistivity is a material property that quantifies how strongly a given material opposes the flow of electric current. In the case of copper, its low resistivity makes it an excellent conductor of electricity, which is why it is commonly used in electrical wiring and other applications where high conductivity is desired.
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.
Does high resistivity have a higher number or lower number?
High resistivity corresponds to a higher numerical value. In the context of materials, resistivity is a measure of how strongly a material opposes the flow of electric current; materials with high resistivity, like rubber or glass, have larger resistivity values compared to conductive materials like copper or aluminum, which have low resistivity values.
What is 77 degrees Fahrenheit in Kelvin?
77 deg Fahrenheit (not farenhite!) = 298.15 K
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.
What is the conductivity of material materials?
Thermal Conductivity is analogous to electrical conductivity. To calculate electrical resistance look-up rho (resistivity). For Copper rho = 1.68�10-8 Ohms-meter Resistance = resistivity (rho) � length/area For thermal conductivity "k" (Watts/m°C) is the coefficient of thermal conduction. Heat transfer (Watts) = k � area/thickness � temperature difference.
