All Flashcards
Define electrostatic equilibrium.
A condition where charges on a conductor are not moving, resulting in a stable charge distribution.
What are free electrons?
Electrons in a conductor that can move freely through the material, enabling electrical conductivity.
Define electric shielding (or screening).
The phenomenon where a conductor cancels out an external electric field inside its volume due to charge rearrangement.
What is a Faraday cage?
A conductive enclosure that blocks external electric fields, creating a field-free zone inside.
Define electric potential.
The amount of electric potential energy a unitary point charge would have if located at any point in space.
What happens when a conductor is given a charge?
The charges distribute themselves evenly on the surface of the conductor to maximize the distance between them.
What is the effect of an electric field not being perpendicular to a conductor's surface?
It would exert a horizontal force on the charges, causing them to move and disrupting electrostatic equilibrium.
What happens when a conductor is placed in an external electric field?
The electrons rearrange to cancel out the field inside the conductor, creating a shielding effect.
What is the effect of the electric field being zero inside a conductor?
Charges inside the conductor align themselves to create an internal field that perfectly cancels out any external electric field.
What is the effect of surrounding an area with a conductor?
It creates a protected area by blocking out external electric fields (Faraday cage).
Define electrostatic equilibrium.
A condition where there is no net motion of charge within a conductor. The electric field inside the conductor is zero, and the electric potential is constant throughout.
What is a conductor?
A material that allows electric charge to move freely through it due to the presence of free electrons.
What is electric shielding (or screening)?
The phenomenon where the free electrons in a conductor rearrange themselves to cancel out any external electric field inside the conductor.
Define a Faraday cage.
A conductive enclosure that blocks external electric fields, creating a field-free region inside.
What is electric potential?
The amount of electric potential energy a unitary point charge would have if located at any point in space.