The resistance is made of copper wire around the laps, electricity resistance with magnetic coil, can be said is the resistance?
A resistor made of wire, called a wire wound resistor, does have this resistance, but it is not common because of its high cost. Wire wound resistors are generally used in precision benchmark circuits because of their good stability. Some high power resistors are wound resistors as well.
As long as an electric current flows, a magnetic field is produced, but the magnetic field produced by the general resistance is so weak that it is difficult to measure.
Common resistance is a carbon film resistor or metal film resistor, it is a skeleton of the insulation surface coated with a layer of metal film or film made of carbon, the cost is very low (1/4W carbon film resistor online wholesale price is 1 yuan, 100) and the distribution of inductance is very small.
