Chapter 8.4 Electric Potential

Question 1

What is the potential energy of a charged object based on?

Answer 1

An object has gravitational potential energy because of its location in a gravitational field

Question 2

What is required to push a charged particle against the electric field of a charged body?

Answer 2

Work

Question 3

What does work change in regard to a charged particle?

Answer 3

Work changes the electric potential energy of the charged particle.
The work done in pushing a charged particle closer to the charged sphere increases the potential energy of the charged particle.

Question 4

What is Electric Potential Energy?

Answer 4

The energy possessed by the charged particle that is due to its location

Question 5

If a particle is released, it accelerates in a direction away from the sphere and it’s electric potential energy changes to what?

Answer 5

Kinetic Energy

Question 6

If you push on a particle with twice the charge, do you do twice the work?

Answer 6

yes

Question 7

Does Twice the charge in the same location have twice the electric potential energy?

Answer 7

Yes

Question 8

You should consider electric potential energy per what?

Answer 8

Consider electric potential energy per charge

Question 9

What is Electric Potential?

Answer 9

Divide the amount of electric potential energy by the amount of charge
It’s the concept of potential energy per charge
It’s often called Voltage

Question 10

What is the unit of measurement for electric potential

Answer 10

The Volt (voltage)
Voltage and Electric Potential can be used interchangeably

Question 11

Are Electric Potential and Potential the same thing?

Answer 11

Yes

They mean electric potential energy per unit charge (in volts)

Question 12

Potential difference is the same as what?

Answer 12

Voltage

They are the difference in electric potential between two points (also in volts)

Question 13

What’s the different between Electric Potential Energy and Electric Potential (or Voltage)?

Answer 13

Electric Potential Energy is the amount of energy needed to move a charge against an electric field.
Electric Potential (Voltage) is the difference in potential energy per unit charge between two locations in an electric field

Question 14

Increased Potential Energy is the result of what?

Answer 14

Work Input

Question 15

High Voltage at low energy is similar to what?

Answer 15

The Harmless high-temperature sparks emitted by a sparkler because temp is average kinetic energy per molecule, which means that total energy is a lot only for lots of molecules

Question 16

High Voltage correlates with a lot of energy only when…

Answer 16

High voltage means a lot of energy only for lots of charge