Consider the magnetic circuit shown in Figure 1 below. The material is steel, and the magnetization curve is shown in Figure 2. The flux density in the air gap is 0.5 [Wb/m²]. Find the current I needed to produce the flux. 1000 turns 10 cm Figure 1: 0.5 cm eter) B(webers per square 1.0 0.8 0.6 0.4 0.2 0 2000 4000 6000 8000 H(amperes per meter) Figure 2: 10,000
Ampere Circuital Law
Ampere's Law states that "for any closed loop path, the sum of the length elements times the magnetic field in the direction of the length element is equal to the permeability times the electric current enclosed in the loop.”
Current Density
To design the electrical and electronic system, the current density is an important factor. The designer current level is the factor on which the circuit performance depends and with the help of the dimensions of the conducting current the current density is then determined. For instance, despite the lower current demanded by smaller devices as integrated circuits are reduced in size, there is a type of trend in achieving the higher device number in even smaller chip areas. The current density is increased in this region at higher frequencies because the conducting region in a wire becomes confined and this is known as the skin effect. The consequences increase as the current densities become higher.
![Consider the magnetic circuit shown in Figure 1 below. The material is
steel, and the magnetization curve is shown in Figure 2. The flux density in the air gap is 0.5
[Wb/m²]. Find the current I needed to produce the flux.
1000 turns
10 cm
Figure 1:
0.5 cm
square meter)
B(webers
1.0
0.8
0.6
0.4
0.2
0
2000
4000
6000
8000
H(amperes per meter)
Figure 2:
10,000](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2Fd7b6ce77-7d1f-42c7-90fc-6e082dc1db1b%2F11bf713e-1f84-4c84-930b-d68a85777c4c%2Fvvvvijr.png&w=3840&q=75)
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