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Nonconductor


 

Nonconductors or electrical insulators are materials which lack movable electric charges, and which therefore lack a low-resistance path for charge flow. When a difference in electrical potential is placed across a nonconductor, no free charges are exposed to the electric field, so no flow of charges appears, and an electric current cannot arise. Ideally, a nonconductor has infinite resistance and zero conductance.

Related Topics:
Electrical insulators - Difference in electrical potential - Electric field - Electric current - Resistance - Conductance

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