Question: As resistance resist current flow,then what are the functions of inductor..plz answer clearly? 

Answer: Simple! just as a resistor 'resists' current, an inductor 'inducts' current!!\n\nI mean an inductor induces current. This induction happens when a magnetic flux (magnetic field) is applied around the conductor. \n\nThere are many theorems related to inductance ... do a google, or refer your textbooks. Also do check out these cool links on induction: \n\nhttp://www.cco.caltech.edu/~phys1/java/phys1/Inductance/Inductance.html\nhttp://en.wikipedia.org/wiki/Inductance
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