@ARTICLE {, title = {Práca magnetickej sily?}, author = {Štubňa, Igor}, journal = {Obzory matematiky, fyziky a informatiky}, year = {2009}, volume = {38}, number = {1}, pages = {35--41}, issn = {1335-4981}, abstract = {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.}, }