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Name a electrical device that can be both a conductor and insulator.

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Electrical Engineering

Name a electrical device that can be both a conductor andinsulator.

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4.4 Ratings (792 Votes)

Name a electrical device that can be both a conductor and insulator. Diodes, transistors, triads, scr and various optoelectronic parts like LED and photodiodes.

Conductors?  Most metals are good at conducting heat and electricity. Things like copper, aluminium, iron, gold...

Inuslators? Most (but not all) polymers (plastics) and ceramics are not very at conducting heat and electricity.
Things like polyethylene, polypropylene, PET, –and for ceramics– clay, porcelain, alumina...

Semiconductors? properties in between the two (but especially in terms of electrical conductivity (eg silicon, gallium arsenide)
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