Electrical Engineering - Inductors

Exercise : Inductors - General Questions
21.
The inductance of an iron-core coil decreases if
the number of turns is decreased
the iron core is removed
the length of the coil decreases
none of the above
Answer: Option
Explanation:
No answer description is available. Let's discuss.

22.
The following coils are in parallel: 75 H, 40 H, 25 H, and 15 H. The total inductance is approximately
6.9 H
14 H
2.2 H
155 H
Answer: Option
Explanation:
No answer description is available. Let's discuss.

23.
When the current through an inductor is cut in half, the amount of energy stored in the electromagnetic field
is quartered
quadruples
doubles
does not change
Answer: Option
Explanation:
No answer description is available. Let's discuss.