29 Questions
What do electric field lines represent?
Magnitude of the electric field
What happens to electric field lines around an isolated charge?
They extend to infinity
How are the field lines distributed between two oppositely charged capacitor plates?
Evenly spaced
What do oppositely charged parallel plates produce between them?
Nearly parallel field lines
What does a charged cylinder do to the electric field inside it?
Eliminates the field inside
What is indicated by the length of vectors in a vector representation of an electric field?
Magnitude of the electric field
What is the name of the energy a charge has due to its location in an electric field?
Potential energy
Which term describes the total electrical potential energy divided by the amount of charge?
Electric potential
What is the work done in pushing a charge against an electric field equal to?
Energy gained by the charge
How does the electrical potential vary with the amount of charge at the same location in an electric field?
Has no relation to the charge
When a balloon is rubbed on hair and becomes negatively charged, what happens to its energy?
Decreases slightly
What remains the same for charges of different magnitudes at the same location in an electric field?
Electrical potential energy per charge
How is the magnitude of an electric field measured?
By observing the force on a positive test charge placed in the field
What does the direction of an electric field indicate?
The type of charge that set up the field
How can an electric field be represented visually?
By drawing vectors called electric field lines
When are electric field lines closer together?
In regions where the field is stronger
What does the length of vectors representing an electric field indicate?
The magnitude of the electric field
Where do vectors point in relation to a negatively charged particle?
Toward the particle
What is the relationship between electric potential and electrical potential energy?
Electric potential is the ratio of electrical potential energy per charge.
Can a capacitor store both energy and charge?
It can store energy and charge.
What is the SI unit of measurement for electric potential?
Volt
How is the electric field inside the conducting sphere of a Van de Graaff generator affected as it charges?
The field increases in magnitude as the amount of charge increases.
What primarily determines the potential energy of a charged particle in an electric field?
The charge of the particle and the distance between charges.
How is potential energy measured?
In joules
Under what conditions would a charged particle have its kinetic energies exceeding its potential energies?
When moving at high speeds.
What does a potential of 1 volt represent?
1 joule of energy per coulomb of charge
If there were twice as much charge on one of the objects, what would happen to the electrical potential energy?
It would be twice as much
What is commonly called voltage?
Electric potential
What happens to the electric potential if twice as much charge is added to an object?
It remains the same
Learn about the concept of electrical potential energy per charge and the work required to push a charged particle against an electric field. Understand how energy is expended to push a positive test charge closer to a positively charged sphere.
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