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.
More questions
1. As compared to dimensions of most feeds, the skin depth at microwave frequencies is
Correct Answer: phasor sum of fields produced by individual antennas of the array
Explanation:
Since field is a phasor quantity we have to take phasor sum.
7. A standard cell of 1.0185 V is used with a slide wire potentiometer. The balance was obtained at 60 cm. When an unknown emf was connected, the balance was obtained at 82 cm. The magnitude of unknown emf is