A coil of resistance 6
takes a current of 2A when connected
across a 20V AC supply. The reactance of the coil will
be




The answer is :- 3
First we must calculate the overall impedance, then the reactive component of this impedance.
By Ohm's law, the impedance Z = V / I = 20 / 2 =
10
Impedance
therefore
reactance 
XL = 8
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