Question

The core of a transformer is laminated because (a) ratio of voltage in primary and secondary may be increased

Answer 1

focault experimentally found that this industry currents are set up in the conductor in the form of closed loops this current look like it is always false and likewise are known as a for cold current this current oppose the cause of their origin therefore due to Eddy Currents a great amount of energy is wasted in form of heat energy if core of transformer is laminated then their effect can be minimised