Electronics - Inductors - Discussion

Discussion Forum : Inductors - General Questions (Q.No. 45)
45.
What is the approximate time for a complete decay of 400 mA of inductor current, when R = 10 ohms and L = 20 H?
10 seconds
8 seconds
4 seconds
2 seconds
Answer: Option
Explanation:
No answer description is available. Let's discuss.
Discussion:
1 comments Page 1 of 1.

Anser said:   1 decade ago
As we Know that
Time Constant for Inductor is
Time Constant=L/R
So Time Constant=20/10=2s
For Complete Decay 5*2s=10s
where 5 is a factor of time constant for complete decay
(2)

Post your comments here:

Your comments will be displayed after verification.