A single layer air cored coil has n turns and inductance L. If a new coil is formed by having 2n turns while keeping the coil length and diameter the same, the new inductance is
Options
A. 0.5 L
B. L
C. 2 L
D. 4 L
Correct Answer
4 L
Explanation
Inductance is proportional to square of number of turns.
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