Physics
Physics, 26.10.2019 06:43, idcbrooo

High voltage power lines are usually supported by glass insulators. an electric current can't flow through a piece of glass because(a) glass does not contain any electrically charged particles. (b) glass contains only positively charged particles. (c) the electrons in the glass completely fill its valence levels and can't shift from one level to another to transport charge through the glass. (d) glass contains only negatively charged particles.

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