17 Questions
In the electric field surrounding a group of charged particles, field strength is greater where field lines are:
Thickest
How can the voltage of a Van de Graaff generator be increased?
By increasing the radius of the sphere or using high pressure gas
Electrons on the surface of a conductor will arrange themselves to:
Cancel the electric field inside to zero
What does the potential energy of a compressed spring and the potential energy of a charged object depend on?
Only on the work done on them
An electric field has:
Both magnitude and direction
Where is the field strength greater in the electric field surrounding charged particles?
Where field lines are thickest
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 charge?
It can store energy and charge.
What happens to the electric field inside a conductor as it charges?
Nothing; the field is always zero.
In a Van de Graaff generator, what happens to the electric field inside the conducting sphere as it charges?
Nothing; the field is always zero.
How is the electric potential related to the kinetic and potential energies of charged particles?
When their kinetic energies exceed potential energies.
What is the purpose of placing the Van de Graaff generator in a container filled with high-pressure gas?
To increase the voltage of the generator
What happens to the electrons carried up into the hollow metal sphere of the Van de Graaff generator?
They move to the outer surface of the sphere
How does mutual repulsion affect the distribution of electrons in a Van de Graaff generator?
Moves electrons to the outer surface of the conducting sphere
What is the function of the rubber belt in a Van de Graaff generator?
To carry electrons from the voltage source to a conducting sphere
How does a Van de Graaff generator demonstrate shielding of electric fields?
By preventing electric charges from accumulating on its surface
What is the purpose of using thin metallic foils separated by a thin sheet of paper in a Van de Graaff generator?
To provide insulation between conducting plates
Test your knowledge on Van de Graaff generator, capacitor energy, and electric fields. Learn about how the energy stored in a capacitor is related to electric fields and the working principles of a Van de Graaff generator.
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