COMEDK 2024 Shift 2 Paper

To find the potential difference per turn in the transformer, we need to understand the primary and secondary voltage relationship. Given that the transformer has a high efficiency, we will assume it's ideal for simplicity.
The transformer formula relating the number of turns and the voltage in primary and secondary windings is given by:
‌

Vp

Vs

=‌

Np

Ns

Where:
Vp is the primary voltage
Vs is the secondary voltage
Np is the number of turns in the primary winding
Ns is the number of turns in the secondary winding
Given:
‌Vp=220V
‌Np=200
‌Ns=40000
We need to find Vs, the secondary voltage. Rearrange the formula to solve for Vs :
Vs=Vp×‌

Ns

Np

Substitute the given values:
Vs=220V×‌

40000

200

Calculate Vs :
Vs=220V×200=44000V
Now, we need to find the potential difference per turn. For an ideal transformer, this is the same for both primary and secondary because the voltage per turn is consistent in an ideal transformer. We can use the primary coil to find this:
Potential difference per turn (in primary) is:
‌

Vp

Np

Substitute the values for Vp and Np :
‌

220V

200‌ turns ‌

=1.1V‌ per turn ‌
Therefore, the potential difference per turn is:
Option D: 1.1 V