Why Does Transformer Coil Ratio Halve Current Despite Doubling Voltage?

AI Thread Summary
A transformer with a coil ratio of 2:1 doubles the voltage in the secondary coil while halving the current due to the principle of conservation of energy. The increased voltage leads to higher impedance in the secondary circuit, which restricts the current flow. This relationship is explained by the formula P = VI, where power (P) remains constant in an ideal transformer. The physical reason behind the impedance change is linked to the transformer's design and the magnetic coupling between the coils. Understanding these principles clarifies how transformers efficiently transfer energy while maintaining balance between voltage and current.
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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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