Chapter 8 Question Help

Question

A power company transmits current through a 210000V transmission line. This voltage is stepped down at an area substation to 35000V by a transformer that has 500 turns on the primary coil. How many turns should there be on the secondary coil of this transformer?

Answer 1

The appropriate equation is that V₁/V₂ = n₁/n₂ i.e. the voltage is proportional to the number of loops in an ideal transformer.

35000 V/ 210000 V = n turns/500 turns

This equation is in your reading or notes.