I am here. 1. Yes 2. No 3. What is "here" really, man?

[The Core](https://www.youtube.com/watch?v=ywbEw6kIGno)

For linearly magnetizable materials, the relationship between the magnetization and the H-field is, $\mathbf{M} = \chi_m \mathbf{H}$ What do you expect the sign of $X_m$ to be for a paramagnetic/diamagnetic material? 1. para: $\chi_m<0 \;$ dia: $\chi_m>0$ 2. para: $\chi_m>0 \;$ dia: $\chi_m<0$ 3. Both positive 4. Both negative Note: Correct answer: B

### Electromagnetism is the foundational field theory of physics Think about everything you NOW know about electromagnetism (it's a lot!). Work with a partner to map out the electromagnetism concepts that you know and how they are related to each other. Discuss how your understanding has changed. We will discuss together.