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Physics, 03.08.2019 02:30 tami5

Avoltage v is applied to the primary coil of a step-up transformer with a 3: 1 ratio of turns between its primary and secondary coils. a resistor r connected to the secondary dissipates a power p = 100 w. how much power is dissipated by the same resistor when the ratio of turns in the transformer is changed to 24: 1 and the same input voltage is used?

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