Question

 The free electrons in a conducter are the carries of ___________ charge​

Answer 1

Answer:

In physics, a charge carrier is a particle or quasiparticle that is free to move, carrying an electric charge, especially the particles that carry electric charges in electrical conductors. Examples are electrons, ions and holes. ... Many metals have electron and hole bands. In some, the majority carriers are holes.

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Answer 2

Answer:

negative electric charge

Electrons carry a negative electric charge. In addition, it is convenient to treat the traveling vacancies in the valence band electron population (holes) as the second type of charge carrier, which carries a positive charge equal in magnitude to that of an electron.