Extra exam question E6D04

WhyInductor and transformer cores are sometimes built from thin layers to reduce power loss from eddy currents in the core. Inductor and transformer cores are sometimes built from thin, insulated layers (laminations) specifically to interrupt the paths that eddy currents would otherwise take through a solid core, reducing the power lost to those circulating currents, answer B. It isn't done to simplify manufacturing, doesn't raise cutoff frequency by reducing capacitance, and doesn't primarily save material cost, eddy current loss reduction is the real reason.