This educational film from the 1940s teaches the fundamental definitions of, and the physical concepts involved in, volt, ampere, ohm and watt.
Invalid Date
Jun 15, 2023
Apr 28, 2023
Jan 1, 1958
Mar 25, 1946
Oct 19, 1989
Dec 1, 1971
Jun 15, 1990
Jul 13, 2010
Nov 1, 1982
May 28, 1945
Oct 21, 2020
Jun 7, 2024
Jan 1, 2000
Nov 18, 2016
Jan 1, 1995
Dec 15, 2021
Mar 25, 2024
Jan 1, 1997
Oct 21, 2005
