Q131 / 180 · KCET 2018 · Physics
Which of the following represents the variation of inductive reactance \( \left(X_{L}\right) \) with the frequency of voltage source \( (\mathrm{V}) \) ?
- Correct answerA

- B

- C

- D

Solution
Inductive reactance, $X_{L}=\omega L$
Here $\omega=2 \Pi f$
$\therefore X_{L}=2 \Pi f L$
$\Rightarrow X_{L} \propto f$
Thus, variation of inductive reactance $X_{L}$ is linear with the frequency of voltage source.
Hence, the correct answer is option: 'A'.