Two days ago in my physics class, one of my friends asked me a question:(adsbygoogle = window.adsbygoogle || []).push({});

"There are 2 identical circular coils with radius 'r', length 'l' and 'n' no. of turns placed with their axes lying on a straight line, and current is let to pass through them so that mutual induction is observed.What happens to the magnitude of mutual induction when a copper plate is introduced between these two coils?"

I said "The coefficient of mutual induction increases and thereby the mutual induction increases."

He said "Eddy currents are produced in the Cu plate and thereby mutual induction gets reduced".

And i still don't know which one is true.

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rAgAv

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# The copper plate riddle

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