An ideal transformer is used on the output of a small coal-fired power station to…
PHYSICS · Multi-part · A Level · Physics · Fields and their consequences · Fields and their consequences
Problem
An ideal transformer is used on the output of a small coal-fired power station to step up the voltage from 2 kV to 400 kV.
(a) The primary coil of the transformer has 250 turns. How many turns are there on the secondary coil?
(b) The current in the primary coil is 150 A. Calculate the
(i) power being generated by the power station.
(ii) current in the secondary coil.