Positive or Negative? How to Find Electric Charge Polarity @RimstarOrg

Uploaded August 2012 | Updated September 2026, 3 weeks ago

Find out if something is positively or negatively charged using just a DIY electroscope. This determines the sign of the electrostatic charge on an electrostatically charged object. The electroscope is first inductively charged from the object being tested. Then a plastic coke bottle is used as an object with known polarity in order to do the test and is triboelectrically charged.

The video showing how to make your own electroscope is:
youtu.be/2PmWlPjV6n0

How inductive charging works video:
youtu.be/-JsVZwc1dOo

The Triboelectric effect video
youtu.be/Fph08eKTVZM

To follow me on Twitter:
twitter.com/#!/RimStarz

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Positive or Negative? How to Find Electric Charge Polarity

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