An American traveler in China carries a transformer to convert China's standard 220 V to 120 V so that she can use some small appliances on her trip. a. What is the ratio of turns in the primary and secondary coils of her transformer? Np/Ns =   b. What is the ratio of input to output current? Iin/Iout =   c. How could a Chinese person traveling in the United States use this same transformer to power her 220 V appliances from 120 V?

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