Electric Fields Flashcards
What is a force field?
A region in which a non-contact force is experienced by a corresponding interacting particle.
What is an electric field?
A region in which a charged particle will experience a non-contact force.
What is electric field strength?
The force per unit charge experienced by a charged particle when placed at that point in the field.
State the equation used to calculate the force a charge experienced in an electric field.
Force=Electric field strength x Charge
F=Eq
What law determines the magnitude of the electric force between two charges?
Coulomb’s Law
State Coulomb’s law in words
The force between two charges is directly proportional to the product of their charges and inversely proportional to the square of their separation.
Gives Coulomb’s law in equation form.
F=kQq/r^2
Describe the electric field pattern around a positive point charge.
A radial field, acting outwards
Describe the electric field pattern around a negative point charge.
A radial field, acting inwards
Describe the uniform electric field between parallel plates.
Parallel, equally spaced lines perpendicular to the plates
What equation is used to calculate the electric field between parallel plates?
E=V/d
What is electric potential ?
The amount of energy required to move a positive test charge from infinity to a given point in an electric field
How do you calculate electric potential for a radial field?
V=kQ/r
Electric potential and electric potential energy equation
V=E/Q
What are equipotentials?
Equipotentials are lines along which the electric potential remains the same
