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Eddy Currents

Assertion :A ...

Question

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

Both Assertion and Reason are correct and Reason is the correct explanation for Assertion

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Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion

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Assertion is correct but Reason is incorrect

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Both Assertion and Reason are incorrect

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Solution

The correct option is D Both Assertion and Reason are incorrect
Eddy currents are produced due to varying magnetic fields. These flow in loops in a conductor and results in heavy losses in the form of heat energy .
Laminating the core decreases the flow of eddy currents and thus increases the efficiency of a transformer.

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