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Electric Field
Electric field lines
Electric shielding
Electrical potential energy
Electric potential
100
You can sense the __________ field that surrounds a charged Van de Graaff generator.
What is force?
100
You can use electric field lines (also called lines of force) to represent an electric field. Where the lines are farther apart, the field is ___________.
What is weaker?
100
The absence of electric field within a conductor holding static charge is not an inability of an electric field to _____________ metals.
What is penetrate?
100
The electrical potential energy of a charged particle is increased when _________ is done to push it against the electric field of something else that is charged.
What is work?
100
Electric potential is not the same as electrical potential energy. Electric potential is ____________________________ per charge.
What is electrical potential energy?
200
The direction of an electric field at any point, by convention, is the direction of the electrical force on a small______________ test charge placed at that point.
What is positive?
200
Since an electric field has both magnitude and direction, it is a ________________________________and can be represented by vectors.
What is a vector quantity?
200
Consider a charged metal sphere. Because of ______________, electrons spread as far apart as possible, uniformly over the surface.
What is repulsion?
200
An object has potential energy by ___________ of its location, say in a force field.
What is virtue?
200
The concept of electrical potential energy per charge has the name, ____________________.
What is electric potential?
300
An electric field has both ________________ and direction. The magnitude can be measured by its effect on charges located in the field.
What is magnitude?
300
The electric field is greater where the vectors are ___________.
What is longer?
300
The metal-lined cover shields the internal electrical components from ______________ electric fields.
What is external?
300
Work is done in pushing the charge against the electric field. This work is equal to the energy ___________ by the charge.
What is gained?
300
At any location the potential energy per charge—whatever the amount of charge—will be the __________.
What is the same?
400
Imagine a small positive “test charge” placed in an electric field. Where the force is greatest on the test charge, the field is --______________..
What is strongest?
400
For two or more opposite charges, the lines ______________ from a positive charge and terminate on a ?negative charge.
What is to emanate?
400
Gravity can be canceled inside a planet or between planets, but it cannot be _____________.
What is shielded?
400
The energy a charge has due to its location in an electric field is called ?___________________________________.
What is electrical potential energy?
400
We can speak about the__________________ at different locations in an electric field whether or not any charges occupy those locations.
What are voltages?
500
The force that one electric charge exerts on another is the interaction between one charge and the _______________________ of the other.
What is an electric field?
500
You can demonstrate electric field patterns by suspending __________________ in an oil bath with charged conductors.
What is fine thread?
500
If there were an electric field inside a conductor, then free electrons inside the conductor would be set in motion. They would move to establish __________________, that is, all the electrons produce a zero field inside the conductor.
What is equilibrium?
500
If the charge is released, it will accelerate away from the sphere and electrical potential energy transforms into ____________ energy.
What is electrical kinetic energy?
500
The voltage of a Van de Graaff generator can be increased by increasing the radius of the sphere or by ________________________________________?
What is placing the entire system in a container filled with high-pressure gas?