The voltage across the secondary winding is 10,000 V, and the voltage across the primary winding is 25,000 V. lf the primary winding has 200 coils, how many coils are in the secondary winding?

2 Answers
Jun 2, 2017

The number of coils is =80 coils

Explanation:

The equation for a transformer is

VsVp=nsnp

The secondary voltage is Vs=10000V

The primary voltage is Vp=25000V

This is a step-down transformer.

The number of coils in the primary windings np=200

The number of coils in the secondary windings is

ns=VsVpnp

=1000025000200=80 coils

Jun 2, 2017

80 turns

Explanation:

VsVp=NsNp
where:
Vs = Voltage of secondary coil
Vp = Voltage of primary coil
Ns = Turns at secondary coil
Np = Turns at primary coil

Therefore:
1000025000=Ns200
Ns=80 turns of wire