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Conductors and insulators - Electricity: Video playlist - BBC Bitesize
Why does a metal wire conduct electricity while the plastic sheath does not?
↗ https://www.bbc.co.uk/bitesize/topics/zhms4wx/watch/zq6634jWhy does a metal wire conduct electricity while the plastic sheath does not?
↗ https://www.bbc.co.uk/bitesize/topics/zhms4wx/watch/zq6634j