JEE Main 2003 Physics question

The core of any transformer is laminated so as to

(1)reduce the energy loss due to eddy currentsCorrect
(2)make it light weight
(3)make it robust and strong
(4)increase the secondary voltage

Answer: (1)

Solution

The changing flux induces eddy currents in a solid iron core, wasting energy as heat. Laminating the core (thin insulated sheets) increases the resistance to

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Question ID VK-038122