If the distance between the wire and the center of the loop is increase by a...

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If the distance between the wire and the center of the loop is increase by a...

If the distance between the wire and the center of the loop is increase by a factor of 3 times, by what factor does the emf induced in the loop change?

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Answer 1

Answer #1

Emf ∞ magnetic field

And

Magnetic field ∞ 1/ distance²

So emf ∞ 1/distance ²

Now the distance is increasing by a factor of 3 times

So the induced emf will decrease by a factor of 9 times

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Answer 2

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