TY - JOUR T1 - On equivalent expressions for the Faraday's law of induction JO - Revista Brasileira de Ensino de FĂ­sica A1 - Rodrigues, Fabio G. SN - 1806-1117 UL - 10.1590/S1806-11172012000100009 VL - 34 Y1 - 2012 PB - Brazil ER -