Question

The self inductance of a coil is 1/2 henry. At what frequency will its inductive reactance be 3140$\Omega$

• A. $100Hz$
• B. $10Hz$
• C. $1000Hz$
• D. $10000Hz$

Answer 1

The correct option is C $1000Hz$

We know that,

$X_L=\omega L$

$\omega =\frac{X_L}{L}$

$\omega =6280$

$f=\frac{\omega }{2\pi }$

$f=1000$ Hz.