P. 4112. A particle of charge Q and of negligible initial speed is accelerated through a potential difference of U. The particle reaches a region of uniform magnetic field of induction B, where it undergoes circular motion. What is the magnetic momentum of the ``circular current''?

(4 points)

Deadline expired.

Statistics on problem P. 4112. 69 students sent a solution. 4 points: 51 students. 3 points: 12 students. 2 points: 4 students. 1 point: 1 student. 0 point: 1 student.