10.738
0.707
1.5
0.575 E. None of the above
Answer is Right!
Answer is Wrong!
The correct answer is $\boxed{\text{A}}$.
The turns ratio is the ratio of the number of turns in the primary winding to the number of turns in the secondary winding. In this case, the primary winding has 100 turns and the secondary winding has 10 turns. Therefore, the turns ratio is 100:10 = 10.738.
Option $\text{B}$ is incorrect because it is the reciprocal of the correct answer.
Option $\text{C}$
is incorrect because it is the turns ratio of a transformer with a primary winding of 10 turns and a secondary winding of 15 turns.Option $\text{D}$ is incorrect because it is the turns ratio of a transformer with a primary winding of 10 turns and a secondary winding of 5 turns.
Option $\text{E}$ is incorrect because it is not a valid turns ratio.