- #1

chound

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**Electro magnetic Induction problem. Simple one, but please check wehre I am wrong.**

## Homework Statement

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

## Homework Equations

emf = - Flux/Time

## 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 ?