1. Metals contain a large number of free electrons.
2. When a potential difference (P.D.) is applied between the two ends of the wire, these free electrons move easily through, the conductor.
3. This motion of free electrons constitutes an electric current.
Hence metals are good conductors of electricity.
2. When a potential difference (P.D.) is applied between the two ends of the wire, these free electrons move easily through, the conductor.
3. This motion of free electrons constitutes an electric current.
Hence metals are good conductors of electricity.
