This educational film from the 1940s teaches the fundamental definitions of, and the physical concepts involved in, volt, ampere, ohm and watt.
Mar 25, 1946
Dec 1, 1971
Oct 19, 1989
Apr 28, 2023
Jan 1, 1958
Jun 15, 2023
Invalid Date
Jul 13, 2010
Mar 25, 2024
Jun 7, 2024
Dec 15, 2021
Nov 1, 1982
Jan 1, 2000
Nov 18, 2016
Jun 15, 1990
Jan 1, 1995
May 28, 1945
Jan 1, 1997
Apr 28, 2019
Aug 2, 2019
