Electrical Engineering - Magnetism and Electromagnetism - Discussion

Discussion Forum : Magnetism and Electromagnetism - General Questions (Q.No. 6)
6.
What is the reluctance of a material that has a length of 0.07 m, a cross-sectional area of 0.014 m2, and a permeability of 4,500 Wb/At × m?
1111 At/Wb
111 At/Wb
11 At/Wb
1 At/Wb
Answer: Option
Explanation:
No answer description is available. Let's discuss.
Discussion:
17 comments Page 2 of 2.

Kannan said:   1 decade ago
It's nice.

Rajesh kumar patro said:   1 decade ago
I agree with all above formula.

Junaid said:   1 decade ago
If I'm not mistaken U=Uo.Ur why not user 1/Uo = 0.796x10^6.

Chandraprakash borkar said:   1 decade ago
Use this farmula
R=l/uA Here l= length,u permeability, a= Area
R= .07/(0.0014*4500*10^6)

Daniel said:   1 decade ago
Lets relate Reluctance with Resistance,

R = pL/A, S = L/uA.
p=Resistivity u = Permeability
so,
S = .07/(0.014*4500* 10^-6) = 1111 At/Wb

Dan said:   1 decade ago
Formula for this one?
(1)

Amrit Kumar Mohanta said:   1 decade ago
Reluctance S=L/(MU*A)


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