It is impossible to figure out the question.
no volt coils are used to de-energise a contactor should a situation arise in which voltage is zero
Probably not much because 6 Volts is not enough to power a 12 Volt coil
Yes. Since the coil is run at full voltage when starting 12 volts may be too much for a 6 volt ignition coil. It would be at about 8 volts when running. There is a starting resistor.
what is the number of turns in the primary and secondary coil for 12 volt battery charger with 220 volt power supply> what is the number of turns in the primary and secondary coil for 12 volt battery charger with 220 volt power supply>
Nine tenths of the voltage would appear across the 200-ohm coil.
If you are talking about a 6 volt coil, yes, so long as the contacts are rated for the 230 volt circuit. If you are talking about 6 volt contacts, no, absolutely not.
probably an old style 6 volt coil with an old-style 'lantern=battery' (6 volt) big fat square thing with the springs on top or old style 12 volt coil with like gas lawn mower key-start (completely sealed) battery /has male tabs/ on top. but coil will not hold a charge for later use.
In the related links box below, I posted Building A 250,000 Volt Tesla Coil.
Coil is a transfer of energy because it takes energy to make coil burn which is reduced as heat/ light energyMy VersionA electrical coil will step up (convert) voltage and electrical energy or step down depending on how it is designed. EG: A coil called a transformer will take the 600 volt power from the power grid and turn it into 120 volt power in your house.
12 volt.
Unless the ballast is a multi tap primary you can not rewire it for 220 volts.
Use a rheostat to lower the voltage to six volts