Conceptual Physics - Hewitt - Chapter 33: Electric Fields and Potential
Terms in this set (28)
An _____ is a force field that surrounds an electric charge or group of charges.
An _____ holds an electron in orbit around a proton.
magnitude and direction
An electric field has both _____ .
positive test charge
The direction of an electrical field at any point is the direction of the electrical force on a small _____.
If the charge that sets up an electric field is positive, the field points _____ that charge.
If the charge that sets up the field is negative, the field points _____ that charge.
When electric field lines are farther apart, the field is _____.
Since an electric field has both magnitude and direction, it is a _____ quantity.
Electric field vectors always point in the direction of the force that would act on a _____ test charge.
length of the vectors
In a vector representation of an electric field, the _____ indicates the magnitude of the field.
distance between field lines
In a lines-of-force representation, the _____ indicates magnitudes.
electric field lines
You can represent an electric field with _____.
lines of force
Electric field lines are also called _____.
If the charge on a conductor is not moving, the electric field inside the conductor is _____ .
The electrical potential energy of a charged particle is _____ when work is done to push it against the electric field.
location in an electric field
A charged object can have potential energy by virtue of its _____.
electrical potential energy
The energy a charge has due to its location in an electric field is called _____.
_____ is electrical potential energy per amount of charge.
not the same as
Electric potential is _____ electrical potential energy.
The SI unit of measurement for electric potential is the _____.
Potential energy is measured in _____.
Charge is measured in _____.
equals 1 joule/coulomb.
Since electric potential is measured in volts, it is commonly called _____.
Can you have high voltage without also having high energy?
device which stores electrical energy
storehouses of energy
Electric fields are _____.
Van de Graaff generator
A common laboratory device for building up high voltages.
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