The reactance of a coil when used in the domestic AC power supply (220 volt, 50 cycles) is 100 ohm. The self-inductance of the coil is nearly (Assume negligible resistance of coil)

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3.2 henry

0.32 henry

2.2 henry

0.22 henry

answer is B.

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Detailed Solution

Reactance =2πvL⇒100Ω=2×227×50×L∴ L=0.32 henry

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