TY - JOUR T1 - Práca magnetickej sily? A1 - Štubňa, Igor JA - Obzory matematiky, fyziky a informatiky Y1 - 2009 VL - 38 IS - 1 SP - 35 EP - 41 SN - 1335-4981 N2 - An effect of the magnetic force on the current as well as on the electric charge in wire at the electromagnetic induction is analyzed. It is shown that the magnetic force never performs work. ER -