There is a soft iron bar, with two coils wound at the two end. A current source is connected to the primary coil. A resistor is connected to the secondary coil.(adsbygoogle = window.adsbygoogle || []).push({});

So, the question is:

"Whether increasing the area of the secondary coil but keeping the area of the primary coil unchanged can increase the induced voltage across the resistor connected the secondary coil?"

My attempt:

Correct,

since according to Faraday's Law, induced emf is proportional to the area of the secondary coil.

But the answer is incorrect. Actually why? Thanks

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# Homework Help: An electromagnetic induction question

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