Electric fields (22) Flashcards
What is a field
An area within which an object may experience a force
two types of charge
static or induced
What is special about a corner
high electric field density
Define electric field strength
a vector that describes the force on a positive charge
What is an equipotential
a plane joining all points with the same pd
Which way to electric field lines go
positive to negative (conventional current)
What is Coulombs law
“The force between two charged particles is directly proportional to the product of their charges and inversely proportional to the square of the
distance between them”
what is epsilon nought
The permittivity of free space
what does E stand for
the electric field strength
What’s the key difference to gravity
can repel as well as attract
What does V stand for
potential difference
What do you treat a particle moving in an electric field like
a 2D projectile
- SUVATS
What is done in the special case of Millikan’s oil drop
Weight is equating to electric field strength
What shape does an electron moving perpendicular to the field lines draw
a parabola
Is electric field strength a vector or scalar
vector
