Ok,thank you all.Perhaps I should give some more details on the project.

    I have a pulse width modulated source of 10-50 Hz,220 vac,
and I need to filter 5th (250 Hz),7th (350 Hz) and 11th (550 Hz)
harmonics(and yes,the H bridge is driven by a pic).
    The amount of current involved should be no more than
15 amps (the coils would have to be constructed with some wire
that can handle that current).
      According to my calculations this could be done by paralelling
aproppiate values of inductance an capacitance for each frecuency,
and putting the pairs in series.The values I calculated are:
 0,01 H coil paralelled with  40,53 uF capacitor to block 250 Hz (5th harmonic)
 0,005 H "      "        "    41,36 uF    "      "    "   350 Hz (7th   "     )
 0,002 H "      "        "    41,87 uF    "      "    "   550 Hz (11 th "     )
      The question is,how do I build a 0,01 H coil to handle 15 amps,
220 Vac?
      Any help will be appreciated.




>>   OK, enough is enough.  They've wagged you *mercilessly* on this one.
>>
>>   If you *really* want to build a *fixed* or *tapped* coil in this
>> range, that is do-able, but you would usually use a laminated (soft)
>> iron core to achieve the value.  An air-cored coil is rather impractical
>> and a variable one, quite impractical, at least over the range you
>> specified.
>>
>>   Audio (it is audio, isn't it?) frequency filters use active "gyrator"
>> circuits to synthesise inductance with op-amps and capacitors.  That's
>> how variable inductance is emulated.
>