Inductance of inductor in large steady state magnetic field

In summary, the inductance of an inductor may be affected by a large steady state magnetic field, depending on the type of core it has. If the inductor has a non-magnetic (air) core, the inductance remains the same regardless of the external field. However, a ferromagnetic core may saturate and cause a change in inductance. In this case, the inductance may start to behave more like an air core.
  • #1
nemesiswes
81
0
So would the inductance of a inductor be effected if it was in a large steady state magnetic field. Say the inductor produces a field of about .01 Tesla and the large electromagnet produces a field of 1 Tesla or more.

How would a high permeable core vs a air core effect it?


Would it add to the inductance or would it decrease it or no effect?
 
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  • #2
If the inductor has a non-magnetic core (air) the inductance remains the same, irrespective of the presence of the external field.
On the contrary, a ferromagnetic core may saturate and the inductance would be different.
 
  • #3
So basically in air, the inductance should stay roughly the same or the same. In a ferromagnetic core , if the external field is large enough, then it may saturate the core, causing the inductor to no longer have the same inductance. Since the core is saturated, I assume that the inductor may start to act more like that of a air core then. That seems like it would make sense.
 

1. What is inductance and how does it relate to inductors?

Inductance is a property of an electrical circuit that describes its ability to store energy in the form of a magnetic field. An inductor is a component in a circuit that is designed to have a high inductance, and it works by creating a magnetic field when current flows through it.

2. How does the inductance of an inductor change in a large steady-state magnetic field?

The inductance of an inductor does not change in a large steady-state magnetic field. This is because inductance is determined by the physical properties of the inductor, such as its size and shape, and not by the external magnetic field.

3. Can the inductance of an inductor be calculated?

Yes, the inductance of an inductor can be calculated using the formula L=NΦ/I, where L is the inductance, N is the number of turns in the inductor, Φ is the magnetic flux, and I is the current flowing through the inductor.

4. How does the inductance of an inductor affect the behavior of a circuit?

The inductance of an inductor plays a crucial role in the behavior of a circuit. It causes current to lag behind voltage, which can result in a delay in the circuit's response to changes in voltage. Inductors also resist changes in current, which can help stabilize the circuit and filter out high-frequency signals.

5. How can the inductance of an inductor be changed?

The inductance of an inductor can be changed by altering its physical properties, such as the number of turns or the material used. It can also be changed by adding or removing other components in the circuit, such as capacitors, which can affect the overall inductance of the circuit.

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