Question

The inductance of a resistanceless coil is 0.5 henry. In the coil, the value of alternating current is 0.2 A, whose frequency is 50 Hz. The reactance of circuit is

• A. 15.7$\Omega$
• B. 157$\Omega$
• C. 1.57$\Omega$
• D. 757$\Omega$

Answer 1

The correct option is B 157$\Omega$

Reactance $=\omega L$

$=2\pi fL$

$=2\pi \times 50\times 0.5$

$=157\Omega$