The core of an efficient transformer should consist of laminated pieces of metal in order to

Assessment: JAMB UTME - Physics - 1999 Subject: Physics

Question 1 Report

The core of an efficient transformer should consist of laminated pieces of metal in order to
Answer Details
The core of an efficient transformer should consist of laminated pieces of metal in order to reduce the heat produced by reducing the eddy current. When a magnetic field changes in a conductor, eddy currents are produced. These eddy currents can cause heating in the core of a transformer and waste energy. By laminating the metal core, the electrical conductivity is reduced in the direction perpendicular to the lamination, which in turn reduces the eddy currents and thus the heat produced. This allows the transformer to operate more efficiently with less energy loss in the form of heat.
Read lesson note on Properties Of Waves: Reflection, Refraction, Diffraction (WAEC)
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