Question

How can you reduce output voltage to 6v in transformers if the input voltage is 240v​

Answer 1

`N_P = 40\ N_S`

To reduce the output voltage to 6v in transformers if the input voltage is 240v​, we need to have 40 times as many turns in the primary coil as there are in the secondary coil.

Step-by-step explanation:

The change in voltage of a transformer depends upon the turns ratio of the transformer between secondary and primary coil. Following formula can be used to determine the turns ratio in this case:

`(N_P)/(N_S) = (V_P)/(V_S) \\\\`

where,

`N_P` = No. of turns in the primary coil

`N_S` = No. of turns in the secondary coil

`V_P` = voltage in the primary coil = 240 V

`V_S` = voltage in the secondary coil = 6 V

Therefore,

`(N_P)/(N_S) = (240\ V)/(6\ V) \\\\N_P = 40\ N_S`

To reduce the output voltage to 6v in transformers if the input voltage is 240v​, we need to have 40 times as many turns in the primary coil as there are in the secondary coil.