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

Answer:

3600 V

Explanation:

The transformer equation states that:

$\frac{V_p}{N_p}=\frac{V_s}{N_s}$

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:

$V_s = \frac{V_p N_s}{N_p}=\frac{(120 V)(2850)}{95}=3600 V$