A coil is wound as a transformer of rectangular cross section. If all the linear dimensions of the transformer are increased by a factor 2 and the number of turns per unit length of the coil remain the same, the self inductance increased by a factor of
Text Solution
Verified by ExpertsThe correct answer is:
C
Self inductance 
Where n is the number of turns per unit length and N is the total number of turns and 
In the given question n is same. A is increased 4 times and 
is increased 2 times, and hence L will be increased 8 times.
Prepare Smarter with CGP Edu
Get practice questions, solutions, and test series in one place.
Write a Review
Share your experience with this question and solution.
Commentary
Send your comment, doubt, correction, or feedback to admin.
Similar Questions
Explore conceptually related problems
A 50 mH coil carries a current of 2 A. The energy stored (in J) is
In an inductor of inductance , a current of is flowing. The energy stored in the inductor is
The SI unit of inductance, can be written as
Two pure inductors each of self-inductance L are connected in parallel but are well separated from …
Two coils X and Y are placed in a circuit such that when the current changes by 2 A in coil X. The …
Two coils have a mutual inductance of 0.005 H. The current changes in the first coil according to e…