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In metals, the charges free to move and carry current are the:
AFree elements
BFree emitters
CFree envelopes
DFree electrons
Answer & Solution
Correct answer: D. Free electrons
1. Good conductors hold many mobile charges.
2. In a metal these carriers are negative.
3. They are the free electrons.
_Source: OpenStax College Physics 2e, Chapter 20, Electric Current, Resistance, and Ohm's Law._
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