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Count the turns ratio of the windings. The voltage ratio is equal to the turns ratio. The current ratio is equal to the inverse of the turns ratio. For instance, a power transformer with a 10:1 turn ratio (primary to secondary) running on 120V will produce 12V. If it consumes 1 ampere from the input, it will provide 10 amperes to the output.
If it were 1 then there would be no point in having it there!
1/5.
the ratio is 8:1.It is 8 to 1.
.5% = .5/100 = 1/200 so the ratio would be 1:200