Question

The inductive reactance of a choke coil of $1/4\pi mH$ in an $AC$ circuit of $50Hz,$ will be

• A. 25 ohm
• B. 0.25 ohm
• C. 0.025 ohm
• D. 2.5 ohm

Answer 1

The correct option is C 0.025 ohm

$X_L=\omega L$

$X_L==2\pi fL$

$X_L=2\pi \times 50\times \frac{{10}^{-3}}{4\pi }$

$X_L=0.025\Omega$