Find the magnetic flux through the ring as a function of time. Part 2: Determine the induced current in the ring. Part 3: Calculate the time-averaged force between the magnet and the ring. Does the ring levitate? Part 4: New twist: Replace the superconductor with a perfect conductor. After $t=10$ seconds, the current reaches a steady state. Explain why.
So, go ahead. Download that PDF. Tackle the first problem involving a charged particle moving through a non-homogeneous magnetic field and a rotating dielectric cylinder. After three hours of frustration, when the symmetry finally clicks, you will understand why Russian physics is in a league of its own. Check the comments below—I have pinned a link to a cleaned, searchable PDF of the 2023-2024 Russian Regional Olympiad problems (Grades 9-11), freshly translated into English. This is as "new" as it gets without violating copyright. Good luck, and may the force (and the Lagrangian) be with you. russian physics olympiad problems pdf new
You will quickly discover why Moscow State University, the Moscow Institute of Physics and Technology (MIPT), and the Russian national team consistently dominate the IPhO standings. It is not smarter students; it is smarter problems. Find the magnetic flux through the ring as
The Rotating Magnet and the Superconducting Washer Does the ring levitate
But why are these problems so highly sought after? Where can you find the newest collections legally? And how should you use them to maximize your performance in the International Physics Olympiad (IPhO) or national competitions?