Question on: JAMB Physics - 2001

Eddy currents are unwanted circulating currents induced in a conductor when the conductor experiences a changing magnetic field. These currents cause energy losses in the form of heat. To reduce these losses: * **Insulated soft iron wires:** Using insulated soft iron wires creates a laminated core. This lamination increases the resistance to the flow of eddy currents, thus reducing their magnitude and the associated energy losses. * **Low resistance wires and High resistance wires:** The resistance of the wire isn't the primary factor to reduce the energy loss. * **Few turns of wires:** The number of turns isn't the primary factor to reduce the energy loss.