The ratio of coils of wire in the primary winding to the secondary winding of a transformer is ratio of 3 to 2 How does the transformer change the voltage of a current applied to the primary winding?

For an ideal transformer, the voltage ratio equals the ratio of secondary coils to primary coils. With 3 primary coils for every 2 secondary coils, the secondary voltage is 2/3 of the primary voltage, so the transformer decreases the voltage to two-thirds its original value.

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