# If a transformer consist of #770# turns in primary coil with #220# primary voltage produces #110# secondary voltage, then calculate the number of turns in secondary coil?

##### 2 Answers

#### Answer:

The number of turns is

#### Explanation:

The equation of the transformer is

The number of turns of the primary coil is

The number of turns of the secondary coil is

The voltage in the primary coil is

The voltage in the secondary coil is

Therefore,

The number of turns of the secondary coil is

#### Answer:

#### Explanation:

Using the transformer equation,

#V_p,V_s# are the voltages of the primary and secondary transformers

#N_p,N_s# are the numbers of coil turns in the primary and secondary transfomers

And so, we got: