Electrical Engineering - Inductors - Discussion

Discussion Forum : Inductors - General Questions (Q.No. 6)
6.
A sine wave voltage is applied across an inductor. When the frequency of the voltage is decreased, the current
is increased
is decreased
does not change
momentarily goes to zero
Answer: Option
Explanation:
No answer description is available. Let's discuss.
Discussion:
21 comments Page 1 of 3.

Anand said:   4 years ago
v=L di/dt & XL=2pifL there fore L= XL/2p.
If;
V=XL/2pif * di/dt.
di/dt= V2pif/XL. if frequency decreases, current decreases.
(1)

Abbas said:   5 years ago
If xl= 2p then it will increases.

Shivu said:   6 years ago
Current will remains the same, because inductor which opposes the change of current.

D Shwetha said:   7 years ago
@Sumeet.

Your explanation is good.

I=V/XL,
I=V/2πfL,
If Frequency decrease, I will increase.
(3)

Kamlesh yadav said:   8 years ago
Here, f proportional to V/I.
Then f decreases with increases I.

Albert said:   8 years ago
Yes, You are right @Bhargav.
(1)

Bhargav said:   9 years ago
Frequency decreased means time period increases. Hence voltage decreases. Therefore current decreases.
(1)

Raf said:   9 years ago
@Taniya is right.

Rafiq said:   9 years ago
Current increases because it is inversely proportion to the inductive reactance.

Stuti said:   10 years ago
We know,

XL = 2f*3.14l.

So if frequency decrease then XL also decease by which opposition of current also decrease and more current flow therefore current increase.


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