Which has the greater resistance of nickel chromium wire or manganese copper, and which has the grea

The length and thickness are the same as nickel-chromium wire and manganese-copper, and the resistance of nickel-chromium wire is greater than that of manganese-copper.

Copper wire.

In the case of the same thickness, length and temperature, the resistance of copper wire is smaller, and the resistance of nichrome wire is larger. Copper wire is a wire drawn from hot-rolled copper rods that are not annealed (but smaller wires may require intermediate annealing), and can be used for weaving meshes, cables, copper brush filters, etc.

Nichrome wire alloys are commonly used in sliding rheostats.

The coil plays the role of protecting the circuit and changing the current in the circuit by changing the resistance of the access circuit part, thereby changing the voltage at both ends of the conductor (electrical appliance) connected in series.

Copper wire precautions.

The number of square wires is 7, and the outer diameter of the wire is 2mm. The conductor material of this product is oxygen-free copper.

Manufactured, copper wire appearance bright, resistivity.

Low, with excellent conductivity and high safety. Eccentricity.

Low, using advanced equipment production, uniform thickness, to avoid the occurrence of ignition if the insulation is too thin.

Since BVR is a soft structure, it is mostly used in soft environments. The only difference between BVR wire and BV wire is that the conductor diameter of R-type wire is soft copper wire.

Summary. The resistance of the copper wire depends on the diameter and length of the copper wire, as well as the material of the copper wire. Generally speaking, the larger the diameter of the copper wire, the lower the resistance; The longer the length of the copper wire, the higher the resistance.

If the resistance of the copper wire is too high, it may be due to the diameter of the copper wire being too small, or the material of the copper wire is not suitable, or the length of the copper wire is too long, resulting in the resistance value being too high. The solution is to replace the copper wire with a larger diameter, or to replace it with a more suitable material, or to reduce the length of the copper wire.

Personal tips: When inlaying copper wire, pay attention to choosing the appropriate diameter and material of copper wire, as well as a reasonable length, to ensure the reasonableness of the resistance.

Nickel copper wire, the resistance value.

The flame retardant value of a copper wire depends on its diameter, length and material. Generally speaking, the smaller the median of the copper wire, the larger its diameter, the longer the length and orange, the purer the material, and the smaller the resistance. In addition, the resistance value of copper wire is also affected by temperature, and as the temperature increases, the resistance value of copper wire will also increase.

Therefore, to determine the resistance value of copper wire, factors such as its diameter, length, material, and temperature need to be considered.

I'm sorry I don't understand, but can you elaborate on that?

The resistance of the copper wire depends on the diameter and length of the copper wire, as well as the material of the copper wire. Generally speaking, the larger the diameter of the copper wire, the lower the resistance; The longer the length of the copper wire, the higher the resistance. If the resistance of the copper wire is too high, it may be because the diameter of the copper wire is too small, or the material of the copper wire is not suitable, or the length of the copper wire is too long, resulting in the resistance value being too high.

The solution is to replace the copper wire with a larger diameter, or to replace it with a more suitable material, or to reduce the length of the copper wire. Personal Tips:

When inlaying copper wire, it is necessary to pay attention to the selection of appropriate copper wire diameter and material, as well as reasonable length, to ensure the reasonable band blunt stupidity of the resistance value.

The answer is: nickel years old Chang Ji Luo alloy is almost wired.

r= l s = resistivity of manganese copper wire * length of manganese copper wire cross-sectional area of manganese copper wire.

Supplement: resistivity of manganese-copper wire = 44*10 8 m (at 20).

There is a table to check: mainly look at the resistivity of the two materials.

According to the title, it should be that the nickel-chromium alloy wire has a large resistance.

The following table shows the resistivity of several metal conductors at 20.

Material resistivity (m) Material resistivity (m) Material resistivity (m).

Silver, platinum, nickel-chromium alloy.

Copper, iron, iron, chromium, aluminum alloy.

Gold, mercury, aluminolenoalloy.

Aluminum, manganese, copper, graphite(8, 13), 10-6

Tungsten constantan. It can be seen that the resistivity of metals is smaller, the resistivity of alloys is larger, nonmetals and some metal oxides are larger, and the resistivity of insulators is greater. The resistivity of germanium, silicon, selenium, copper oxide, boron, etc., is smaller than that of insulators and greater than that of metals

In the case of not knowing the material, length, and cross-sectional area, the size of the resistance of the conductor cannot be determined, because the resistance of the conductor is determined by the material, length, and cross-sectional area together, and now there is only the material, and the length and cross-sectional area are not known, but if the length and cross-sectional area of the steel wire and the nickel-chromium alloy wire are equal, the resistance of the nickel-cadmium alloy is large.

Resistivity copper 10-8

Manganese-copper 10-7

r= l s is directly proportional to the resistivity.