# Fall of a square conductor loop perpendicular to a homogenous magnetic field

This is my homework. I am not asking you to complete it for me - I just need a push in the right direction so I can complete the rest. The question is translated from German, so it reads a bit awkward. I have read the homework questions guidelines and am not trying to be rude. My specific questions are after the actual assignment. I have added the assignment so you (hopefully) understand the context.

A square conductor loop of length $l$ and mass $m$ is located between two square pole shoes of a magnet of the surface area $l^2$ between which the homogeneous $\vec B$ field prevails. Outside the space directly between the shoes there is no field. $x$ indicates the position of the loop as shown in the figure. From the sketched initial position at $x = 0$ in which the conductor loop initially rests, the latter falls downwards under the influence of the gravity.

Calculate how long it takes to leave between the pole shoes in the following task points.

A) In which direction a current flows in the conductor loop during the fall

B) Specify in which of the four sides a voltage $U$ is induced during the fall time. Calculate the magnitude of the voltage and the current $I$ flowing in the loop with the resistance $R$.

My specific questions:

In which direction does the vortex field rotate? In which sides does a current get induced and why?

Thank you for your help.

• Can you include a link of the figure? – BLAZE May 29 '17 at 19:57
• "as shown in the figure" located where? Until you add this we can't really answer your question. – BLAZE May 29 '17 at 20:17
• Whoops. I forgot to add it. I will do so now. – Laura Hancock May 29 '17 at 21:05
• @BLAZE Forgot to tag. I have added the photo now. Thank you. – Laura Hancock May 29 '17 at 21:25