Why Does Transformer Coil Ratio Halve Current Despite Doubling Voltage?

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SUMMARY

The discussion centers on the operation of transformers, specifically addressing why a transformer with a coil ratio of 2:1 results in a doubled voltage and halved current in the secondary coil. This phenomenon is attributed to the conservation of energy, where the power input (voltage multiplied by current) remains constant. The additional impedance that causes the current to halve is linked to the transformer's design and the principles of electromagnetic induction. Understanding these principles is crucial for grasping transformer functionality.

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Yuqing
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If a transformer with coil ratios 2:1 creates a voltage twice that of the primary in the secondary coil why is the current halved? I realize that this is a consequence of the conservation of energy, but there must be a physical reason behind this. What is causing the additional impedance that halves the current even though the voltage is doubled?
 
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