Question

What is the output voltage from a step up transformer with 25 turns in the primary coil and 75 turns in the secondary coil if the input voltage was 120 V?

Answer 1

360 V

Step-by-step explanation:

We can use the transformer equation:

`(V_p)/(N_p)=(V_s)/(N_s)`

where

`V_p` is the primary (input) voltage

`N_p` is the number of turns in the primary coil

`V_s` is the secondary (output) voltage

`N_s` is the number of turns in the secondary coil

In this problem,

`V_p = 120 V\\N_p = 25\\N_s = 75`

Substituting into the equation, we can find the output voltage:

`V_s = N_s (V_p)/(N_p)=(75)(120)/(25)=360 V`