A transformer has 400 turns in the primary coil and 8000 turns in the secondary coil. It is connected to a 220 V main supply. The potential difference per turn in secondary coil is

0.55 V

The correct answer is Option (3) → 0.55 V **

Given:

$N_p = 400$, $N_s = 8000$, $V_p = 220\ \text{V}$

Potential difference per turn in primary = $\frac{V_p}{N_p} = \frac{220}{400} = 0.55\ \text{V/turn}$

In an ideal transformer, potential per turn is the same in both coils.

∴ Potential difference per turn in secondary = $0.55\ \text{V/turn}$