Electrical Engineering - Magnetism and Electromagnetism - Discussion

Discussion Forum : Magnetism and Electromagnetism - General Questions (Q.No. 11)
11.
There is 900 mA of current through a wire with 40 turns. What is the reluctance of the circuit if the flux is 400 Wb?
14,400 At/Wb
1,440 At/Wb
9,000 At/Wb
90,000 At/Wb
Answer: Option
Explanation:
No answer description is available. Let's discuss.
Discussion:
11 comments Page 1 of 2.

Amrit Kumar Mohanta said:   1 decade ago
mmf(F)=NI
Reluctance(S)=mmf/flux

Alaa said:   1 decade ago
R =MMF/FLUX, MMF = TURNS*AMP.

R = (900*10^-3*40)/400*10^-6 = 90000 At/Wb.
(2)

AISHA said:   9 years ago
What is this AMP?

Sid said:   9 years ago
It's ampere @Aisha.

Durgesh said:   9 years ago
What is Reluctance?

Shiv said:   8 years ago
Reluctance means opposition to the magnetic flux.

Sadhan bera said:   8 years ago
Any flow means if water flow it is called current.
(1)

Swetha said:   7 years ago
In electrical circuit resistance, in magnetic circuit reluctance.
Current in electrical circuit same as in magnetic circuit is flux.
Voltage in electrical circuit same as in magnetic circuit NI or mmf (AT).
Reluctunce= NI/π unit AT/Weber.
(1)

Surabhi said:   7 years ago
Reluctance=mmf/flux.
mmf=amp/turns.

Vvk said:   6 years ago
Reluctance = N * flux/Current.
(1)


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