Electromagnetic Induction » Exercise – 1
10. Eddy current may be appreciable in many cases. It heats metals and so a wastage of electrical energy noticed. This is undesirable in transformers, induction coil and choke coil. This can be minimised by using :
(a) laminated cores in transformers
(b) using bundles of soft iron rods in induction coils
(c) using glass surfaces
(d) all are false
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