haley6192 haley6192

27-03-2019
Physics

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An alternating current in a wire has a voltage of 2,800 V. It needs to be reduced 70 V. The wire makes 120 turns in the primary coil of a step- down transformation. How many turns of wire need to be in the secondary coil?

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saniasairani saniasairani

27-03-2019

For a transformer

Ns/Np = Es/Ep

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