# The transformer

The primary coil of the transformer has 1100 turns and is connected to a voltage of 220 V. How many turns does the secondary coil have when it has a voltage of 55 V?
Determine the transformation ratio and decide what the transformation is.

n2 =  275
k =  0.25

### Step-by-step explanation:

$k=\frac{{U}_{2}}{{U}_{1}}=\frac{55}{220}=\frac{1}{4}=0.25$

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