A transformer has 150 turns in the primary coil and 20 turns in the secondary coil. When a 120-V potential difference is applied to the primary coil, what is the potential difference in the secondary coil?

1 Answer
Apr 4, 2018

The voltage is #=16V#

Explanation:

The transformer turns ratio is

#N_p/N_s=V_p/V_s#

The number of turns in the primary coil is #N_p=150#

The number of turns in the secondary coil is #N_s=20#

The voltage in the primary coil is #V_p=120V#

The voltage in the secondary coil is

#V_s=N_s/N_p*V_p=20/150*120=16V#