Question

A step up transformer used on a 120v line has 95 turns on the primary and 2850 turns on the secondary.what is the emf across the secondary

Answer 1

3600 V

Step-by-step explanation:

The transformer equation states that:

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

where

`V_p = 120 V` is the voltage in the primary coil

`N_p = 95` is the number of turns in the primary coil

`V_s` is the voltage in the secondary coil

`N_s = 2850` is the number of turns in the secondary coil

Slving the equation for Vs, we find the emf induced in the secondary coil:

`V_s = (V_p N_s)/(N_p)=((120 V)(2850))/(95)=3600 V`