A transformer for a laptop computer converts a 120-V input to a 24-V output.Compared with the number of turns on the primary coil,the secondary has

Question

Quizplus · Accepted Answer

The voltage ratio between the primary and secondary coils of a transformer is directly proportional to the ratio of the number of turns on the primary coil to the number of turns on the secondary coil. Since the transformer steps down the voltage from 120 V to 24 V, which is a reduction by a factor of 5, the secondary coil must have 1/5 as many turns as the primary coil.

A Transformer for a Laptop Computer Converts a 120-V Input