AC Transformer Number of Turns and Maximum Power
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A transformer for an answering machine takes an AC voltage of 170V (maximum, or peak-to-peak) as its input and provides 7.8V (rms) as its output to the answering machine.
A) What is the turns ratio between the primary and secondary?
B) When not answering, the machine uses a maximum power of 5.0W. What is the current (rms) drawn from 170V line?
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