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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Define
v = volume of a drop per second, cm³/s
The time taken to fill 200 cm³ is 1 hour.
Let V = 200 cm³, the filled volume.
Let t = 1 h = 3600 s, the time required to fill the volume.
Therefore,
The average volume of a single drop is approximately 0.0556 cm³.
Answer: 0.0556 cm³
v = volume of a drop per second, cm³/s
The time taken to fill 200 cm³ is 1 hour.
Let V = 200 cm³, the filled volume.
Let t = 1 h = 3600 s, the time required to fill the volume.
Therefore,
The average volume of a single drop is approximately 0.0556 cm³.
Answer: 0.0556 cm³