# Counting Electrical Charges In Motion

Dr. James S. Strickland shows how an electrolysis experiment enables us to count the number of elementary charges passing through an electric circuit in a given time and thus calibrate an ammeter. He explains that elementary charges in an electrolysis experiment are identical to those in a Millikan experiment, and demonstrates the random nature of motion of elementary charges with a current of only a few charges per second. For more info on PSSC, its history, and films, visit http://www.afana.org/psscfilms.htm

- Kind: Educational
- Year: 1961
- Runtime: 22 min
- By: Physical Science Study Committee. Physics.; Educational Services, Inc.; Modern Talking Picture Service, inc.
- Genres: Education, Science
- Archive: [Internet Archive](https://archive.org/details/CountingElectricalChargesInMotion)
- Licence or status: none stated by the archive
- Who can watch: Little Ones profiles and older (the archive gives no rating; placed by Invisible Network from its collection and subjects)

[Watch now](https://invisiblenetwork.ai/watch/archive/ia/CountingElectricalChargesInMotion?play=1)