Question
Current flows only in ____ materials.
Answer
Current flows only in conductive materials.
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Conductivity can be divided into two categories: ____ conductivity.
Conductance is the reciprocal of ____.
The SI unit for conductance is ____.
Some materials allow free flow of electric charge within them; these materials are called ____.
The ____ has often been visualized as a sea of electrons flowing over and past a rigid lattice of metal cations.
Due to ____, electrons are free to move around in the metal, conducting electrical charges.