A transformer changes the 10,000 v power line to 120 v. if the primary coil contains 750 turns, how many turns are on the second
1 answer:
For a transformer, the ratio between the number of turns of primary and secondary coil is the same as the ratio between the voltages on the two coils:
Where
and 
are the number of turns in the primary and secondary coils, while 
and 
are the voltages on the two coils.
Using the data of the problem:
, 
and 
, we can find , the number of turns of the secondary coil:
Where
Using the data of the problem:
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