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A transformer connected to a 120 −V ac line is to supply 12.0 VV (rms) to...

A transformer connected to a 120 −V ac line is to supply 12.0 VV (rms) to a portable electronic device. The load resistance in the secondary is 5.20 ΩΩ .

- What should the ratio of primary to secondary turns of the transformer be, What rms current must the secondary supply?

- What average power is delivered to the load, What resistance connected directly across the source line (which has a voltage of 120 −V) would draw the same power as the transformer?

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