l
If iron filings were sprinkled evenly across the
entire paper circle, at which location would
the
grealest concentration of iron filings be found after
30 seconds?
![l If iron filings were sprinkled evenly across the entire paper circle at which location would the grealest concentration of iron filings be found after 30 sec class=](https://us-static.z-dn.net/files/d23/9502dd8e2759d313a3be8567052649a3.png)