(ii) Resistance of the windings: The wire used for the windings has some
resistance and so, energy is lost due to heat produced in the wire
(I 2R) In high current, low voltage windings, these are minimised by
using thick wire (iii) Eddy currents: The alternating magnetic flux induces eddy currents
in the iron core and causes heating The effect is reduced by using a
laminated core