Assertion :A transformer cannot work on dc supply Reason: dc changes neither in magnitude nor in direction

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 A Both Assertion and Reason are correct and Reason is the correct explanation for Assertion
Due to constant flux there will be no emf induced in primary or secondary and hence transformer will be of no use. So, you can safely say that Current Transformers cannot work with DC Supply. ... This current is very high and can damage the winding of Transformer

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