Electric Fields Flashcards
What are the units of ๐0 , the Permittivity of Free
Space?
๐ถ2/๐๐2
What type of quantity is the electric field.
Vector, because it contains at direction.
What is the conventional direction of an electric field?
The charge originates from the positive and terminates at the negative.
Can electric field lines intersect?
They donโt intersect.
A field that spreads out in a linear direction is called:
A radial electric field.
In a uniform field, it has the ___ field strength.
Same. This is because itโs spread over an area, and the field strength is the exact same.
Whatโs the units of the electric field?
N C-1.
When drawing electric fields, what indicates its strength. (by using the electric field lines?)
By the density of lines, or how closely packed they are. Higher density means greater electric field strength.
How do you indicate when drawing an electric field that itโs uniform.
When the lines are parallel and equally spaced.
What is electric field intensity and whatโs its quantity?
The strength of EF at a certain point. Itโs a vector quantity because it contains a direction.
If a test charge is free to move, where will it move to?
It will move in the direction of EF intensity.
What is one coloumb equal to in charge?
6.24x1018
What is electric flux?
Measure of the number of field lines passing through an area.
Give the definition of the electric field strength.
Electric force per unit charge.
When are E and F parallel to each other?
When the test charge is positive.
