PhysicsChapter 6: Electrostatics
Conductors
Introduction
A conductor is a material in which electric charges can move relatively freely.
Definition
Mobile Electrons
Metals are good conductors because they contain mobile electrons.
Electrostatic Behaviour
When excess charge is placed on a conductor, it redistributes through the material. Under electrostatic equilibrium: electric field inside the conductor is zero; excess charge resides mainly on the surface; * the conductor is at a common electric potential.
Examples
* copper; * aluminium; * silver; * metals generally.
Uses
Conductors are used in: * wiring; * earthing; * lightning protection; * electronic circuits.
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Review the key facts, formulas and checks before you move on.Conductors
Sticky Notes · Quick Revision
CONDUCTOR
- Charges move
METALS
STATIC EQUILIBRIUM
- Field inside ≈ 0