Concept:Eddy-current losses occur when a changing magnetic flux induces circulating currents inside a metal core. These losses are reduced by breaking the path of the induced currents.
Explanation:A solid iron core allows large eddy currents to circulate freely, wasting energy as heat.
If the core is made from insulated soft iron wires, the insulation breaks up the eddy-current paths.
This increases the resistance to the induced currents, so the eddy currents become smaller and energy loss is minimized.
Using low-resistance wires reduces ordinary copper or
I2R loss, not eddy-current loss.
High-resistance wires in a winding would increase heating loss, so they are not the correct method for eddy-current loss.
Answer:B. By using insulated soft iron wires