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Difficulty: EasyElectrical Current and Electron Flow

In standard metallic conductors such as copper wire, electric current consists of the directed movement of free valence electrons drifting through the material.

Answer: Answer

Answer

True
The statement is true because the physical flow of electric current in metallic conductors like copper is carried exclusively by free valence electrons drifting through the atomic lattice under an applied electric field.

Step-by-Step Solution

1
Identify the charge carriers present in solid metallic conductors.
Metals have an atomic structure characterized by a lattice of fixed positive ions surrounded by loosely held, mobile valence electrons.
Determining which atomic particles are free to move establishes the physical mechanism of conduction.
2
Evaluate the particle movement that constitutes electrical current.
When a voltage source is applied, these free valence electrons drift collectively through the conductor, which defines the physical flow of electric current.
Atomic nuclei remain locked in the crystal lattice while only the free electrons travel through the wire.

Key Concept

Physical electric current in solid metallic conductors is the collective drift of free valence electrons.
Estimated Time:30s
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Topics

Electrical Current and Electron Flow

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