In a typical ____ transformer, there are more turns in the secondary coil than in the primary coil.

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Multiple Choice

In a typical ____ transformer, there are more turns in the secondary coil than in the primary coil.

Explanation:
Turn count between the primary and secondary determines whether the transformer steps voltage up or down. If the secondary winding has more turns than the primary, the voltage is increased from input to output—that’s a step-up transformer. The voltage ratio equals the number of turns on the secondary divided by the number of turns on the primary, so Vs = (Ns/Np) × Vp. Consequently, the output current is reduced as Is ≈ (Np/Ns) × Ip to conserve power (ignoring losses). This is why a typical step-up transformer fits the description. A step-down transformer would have fewer turns on the secondary, reducing voltage. An isolation transformer focuses on electrical isolation and often uses a 1:1 or near-1:1 turns ratio, not boosting voltage. An autotransformer uses a shared winding and isn’t the standard separate primary/secondary arrangement described here.

Turn count between the primary and secondary determines whether the transformer steps voltage up or down. If the secondary winding has more turns than the primary, the voltage is increased from input to output—that’s a step-up transformer. The voltage ratio equals the number of turns on the secondary divided by the number of turns on the primary, so Vs = (Ns/Np) × Vp. Consequently, the output current is reduced as Is ≈ (Np/Ns) × Ip to conserve power (ignoring losses).

This is why a typical step-up transformer fits the description. A step-down transformer would have fewer turns on the secondary, reducing voltage. An isolation transformer focuses on electrical isolation and often uses a 1:1 or near-1:1 turns ratio, not boosting voltage. An autotransformer uses a shared winding and isn’t the standard separate primary/secondary arrangement described here.

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