Assertion: A laminated core is used in transf | vedclass

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(D) Large eddy currents are produced in a non-laminated iron core of a transformer by the induced $emf$,as the resistance of a bulk iron core is very

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If both the Assertion and Reason are incorrect.

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(D) Large eddy currents are produced in a non-laminated iron core of a transformer by the induced $emf$,as the resistance of a bulk iron core is very small.By using thin iron sheets as a core,the electrical resistance is increased.Laminating the core substantially reduces the eddy currents.Eddy currents heat up the core of the transformer,leading to energy loss in the form of heat.Therefore,more eddy currents result in greater energy loss,which decreases the efficiency of the transformer.Since both the Assertion and the Reason are false,the correct option is $D$.

Assertion: $A$ laminated core is used in transformers to increase eddy currents.
Reason: The efficiency of a transformer increases with increase in eddy currents.

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Assertion: $A$ laminated core is used in transformers to increase eddy currents.Reason: The efficiency of a transformer increases with increase in eddy currents.