Episode 103: Currents and Charge Carriers

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From the Institute of Physics, these activities present a range of examples involving different types of charge carrier and links the measured current to rates of flow of charge.

The activities consist of a series of demonstrations which could be set up before the lesson. These include:
• considering different charge carriers (electrons, positive ions and plasmas) (ions and electrons) in metals, air, gases and liquids
• viewing an electron beam in a vacuum tube, which can lead into to the derivation of I = nAvq
• fluorescent tube and conduction in a plasma
• humans as conductors - current, voltage and electrical safety

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