Shared Flashcard Set

Details

Chapter 33: Electric Fields and Potential Questions
Chapter 33 Electric Fields and Potential Questions
36
Physics
11th Grade
01/14/2012

Additional Physics Flashcards

 


 

Cards

Term
What fills the space around every electric charge?
Definition
An electric field
Term
An electric field is _________ where it would exert the greatest electrical force on a (+) test charge.
Definition
strongest
Term
How do you determine the direction of the electric field?
Definition
The direction of the field at any point is the direction of the electrical force on a (+) test charge.
Term
How can an electric field be represented?
Definition
Electric field lines
Term
Where are static charges found on a conductor?
Definition
Static charge occupies only the outer surface of a conductor; inside the conductor the electric field is zero.
Term
An electric field is a storehouse of __________.
Definition
energy
Term
A _______ object has electrical potential by virtue of its location in an electric
field.
Definition
charged
Term
The electric potential, or __________, at any point in an electric field is the electric
field is the electrical potential energy per charge for a charged object at that point.
Definition
voltage
Term
A zero of potential must be specified; it is often at __________ distance from charges
Definition
infinite
Term
A ________ is a device for storing charge and energy.
Definition
capacitor
Term
Tell me about a Van de Graaff generator.
Definition
It is a charged dome (electrostatic machine)
Term
The _____________ around a magnet, black hole or electric charge is said to contain a ________ field.
Definition
space
force
Term
Around every mass is a ________ field.
Definition
gravitational
Term
Around every electric charge is an ________ field.
Definition
electric
Term
A force field that fills the space around every electric charge or group of charges. N/C Newtons/Coulomb
Definition
Electric field
Term
An electrical ________ holds an electron in orbit about a proton.
Definition
force
Term
An electric field has both ________ and ________.
Definition
Magnitude, direction
Term
Is electric field (E) a vector?
Definition
Yes—it has magnitude and direction, And can be represented by vectors.
Term
What is the charge of the test charge in a field?
Definition
Always (+)
Term
Is there an electric field inside a conductor?
Definition
No
Term
For oppositely charged plates, what can you tell me about the field between the plates?
Definition
It has a constant strength except near the ends
Term
Why are you safe if you are inside a car that is hit with lightning?
Definition
There is little or no electric field in the space inside a conductor.
Term
How do you shield yourself from an electric field?
Definition
Surround yourself with a conducting surface
Term
Why are electronics encased in metal boxes?
Definition
It shields them from all outside electrical activity.
Term
Work is done when a force moves something in the direction of the ________.
Definition
force
Term
An object has potential energy by virtue of its ________.
Definition
location
Term
Name the unit of measurement for electrical potential.
Definition
volt
Term
What is the unit for electric potential or volt?
Definition
Joules/Coulomb
Term
The electrical potential difference across which 1 Coulomb gains or loses 1 joule of energy.
Definition
volt
Term
Definition of joules.
Definition
Amount work done when 1N force moves an object 1 meter toward force.
Term
What is Voltage.
Definition
Electrical potential
Term
A device used to store charge in a circuit.
Definition
capacitor
Term
How is a charged capacitor discharged?
Definition
A conducting path is provided between the plates
Term
________ is required to push a charged particle against the electric field of a charged body.
Definition
work
Term
The energy the charge possesses by virtue of its location is called.
Definition
Electrical potential energy
Term
Electrical potential/charge =
Definition
Electric potential
Supporting users have an ad free experience!