Question

The reactance of a coil when used in the domestic AC power supply (220 V 50 cycles) is 100 Ohm. The self inductance of the coil is nearly

• A. 3.2 Henry
• B. 0.32 Henry
• C. 2.2 Henry
• D. 0.22 Henry

Answer 1

The correct option is B 0.32 Henry

AS we know,

Reactance $=2\pi \nu L\Rightarrow 100\Omega =2\times \frac{22}{7}\times 50\times L$
$\therefore L=0.32$ henry