Podcast
Questions and Answers
What is the relationship between electric potential and electrical potential energy?
What is the relationship between electric potential and electrical potential energy?
- They are different names for the same concept
- Both are measured using the units of coulomb
- Both are measured using only the units of joules
- Electric potential is the ratio of electrical potential energy per charge (correct)
Can a capacitor store both energy and charge?
Can a capacitor store both energy and charge?
- It cannot store energy
- It cannot store charge
- Can only store energy
- Can store energy and charge (correct)
What happens to the electric field inside a conducting sphere of a Van de Graaff generator as it charges?
What happens to the electric field inside a conducting sphere of a Van de Graaff generator as it charges?
- The field increases in magnitude as the amount of charge increases
- The field decreases in magnitude as the amount of charge increases
- Nothing; the field is always zero (correct)
- The field will have a net force of one
When does an electric field shield inside a conductor?
When does an electric field shield inside a conductor?
How does a change in polarity affect the electric potential energy of a system?
How does a change in polarity affect the electric potential energy of a system?
What is the SI unit of measurement for electric potential?
What is the SI unit of measurement for electric potential?
How is potential energy measured?
How is potential energy measured?
What does a potential of 1 volt represent?
What does a potential of 1 volt represent?
Why is it said that a potential of 1000 V means that 1000 joules of energy per coulomb is needed to bring a small charge from very far away and add it to the charge on the conductor?
Why is it said that a potential of 1000 V means that 1000 joules of energy per coulomb is needed to bring a small charge from very far away and add it to the charge on the conductor?
If there were twice as much charge on an object, what would happen to its electrical potential energy?
If there were twice as much charge on an object, what would happen to its electrical potential energy?
What would happen to the electric potential if twice as much charge was present on an object?
What would happen to the electric potential if twice as much charge was present on an object?
What is the term for the energy a charge has due to its location in an electric field?
What is the term for the energy a charge has due to its location in an electric field?
When pushing a positive test charge closer to a positively charged sphere, what type of energy is overcome?
When pushing a positive test charge closer to a positively charged sphere, what type of energy is overcome?
What is the term used to describe the electrical potential energy per charge?
What is the term used to describe the electrical potential energy per charge?
Why is it mentioned that the electric potential of any charge at the same location is the same?
Why is it mentioned that the electric potential of any charge at the same location is the same?
When rubbing a balloon on hair, what causes the balloon to become negatively charged?
When rubbing a balloon on hair, what causes the balloon to become negatively charged?
What can be said about the electrical potential energy of an object with greater charge compared to an object with less charge within an electric field?
What can be said about the electrical potential energy of an object with greater charge compared to an object with less charge within an electric field?
