A transformer with 400 turns on the primary coil is used to decrease the voltage from 3000 V to 120 V for home use. How many turns should be in the secondary coil?

Name: A transformer with 400 turns on the primary coil is used to decrease the voltage from 3000 V to 120 V for home use. How many turns should be in the secondary coil?
Brand: Quizplus
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Question

Quizplus · Accepted Answer

The voltage ratio is 3000V/120V = 25. Therefore, the turns ratio should also be 25. With 400 turns on the primary, the secondary should have 400/25 = 16 turns.

A Transformer with 400 Turns on the Primary Coil Is