(adsbygoogle = window.adsbygoogle || []).push({}); Electro magnetic Induction problem. Simple one, but plz check wehre I am wrong.

1. The problem statement, all variables and given/known data

A magnet moving down, goes through a coil and exits it below. Plot the graph showing variation of induced emf in coil with time.

2. Relevant equations

emf = - Flux/Time

3. The attempt at a solution

As the magnetic field B increases, emf becomes more and more negative.

Then while leaving, B decreases, emf becomes more and more positive.

Hence

The emf is first negative, forms a V shape in the negative emf region and then an inverted V in the positive emf region when it leaves.

4.Answer in the textbook

The emf is first positive ... in other words just the opposite of what I said.

Where did I go wrong ?

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# Homework Help: Electro magnetic Induction problem. Simple one, but check wehre I am wrong.

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