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jasman8
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Why the values of inductance for an air-cored coil are not exactly the same for changing current across it in practice??
Inductance variation in air-cored coils refers to the change in the inductance value of a coil when the number of turns, the size of the coil, or the position of the coil is altered. This can occur due to changes in the magnetic field and can affect the performance of the coil in electronic circuits.
The numbers don't always match in air-cored coils because inductance is affected by a variety of factors such as the geometry of the coil, the spacing between the turns, the material used, and the frequency of the current passing through the coil. These variations can lead to differences in the calculated inductance value.
Inductance variation in air-cored coils can be measured using an inductance meter, which applies a known alternating current to the coil and measures the resulting voltage. The inductance value can then be calculated using the formula L = V/I, where L is the inductance, V is the voltage, and I is the current.
Inductance variation in air-cored coils can be minimized by using a larger number of turns, a smaller spacing between turns, and a larger coil size. The use of high-quality materials with low resistance can also help reduce variations in the inductance value.
Understanding inductance variation in air-cored coils is important in the design and construction of electronic circuits, particularly in applications that require precise control of inductance, such as in filters and oscillators. It also allows for the optimization of coil performance and can help troubleshoot issues related to inductance in circuits.