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Question 1

What happens when you bring a positively charged object next to a neutral object

Answer 1

The positive charges would move away from the the positive object and the negative charges would move towards the positive object

Overall: attraction towards the positive object

Question 2

what two factors increase the electric potential energy?

Answer 2

• seperation distance (increase)
• size of charge (increase)

very similar to GPE with mass and height

Question 3

why is work done on the charge?

Answer 3

attraction to the postive charge,

Question 4

what happens as work is done on the charge?

Answer 4

1. moves towards the positive object and transfers
2. transfering it’s electric potential energy to kinetic energy

decrease in electric potential energy= increase in kinetic energy (no F)

Question 5

what is potential?

Answer 5

potential electric energy per columb

potential energy / coulumbs (magintude)

how mcuh PE each coulumb has

Question 6

what is the difference between potential and electric potential energy

Answer 6

• potential only takes seperation distance into account
• electri cpotential energy takes seperation distance and the magnitude of charge into account

Question 7

what is a volt?

Answer 7

the unit of potential
derived unit of joule per coulomb
1V = 1J/c

Question 8

what unit is the electric potential energy in?

Answer 8

joules

Question 9

what does 1 volt mean?

Answer 9

1 joule of electric potential energy per coulumb

Question 10

what is the potential difference?

Answer 10

• the difference in potential between two points
• the change in eletric potential energy per coulomb between two points

Question 11

what does it mean if two points have a potential difference of 10v?

Answer 11

each coloumb of charge will expereince a change in electric potential energy between the 2 poits of 10 joules

Question 12

describe the process of lightning

Answer 12

1. negative charge builds up at the bottom of a storm cloud
2. the negative charge repells the negative charges in the ground and attracts the postitive charge
3. cloud attracted to ground creating an elctric potential energy
4. since the cloud is so far away (seperable distance)
5. large potential difference between cloud and coulumb
6. work done on charge moving towards the gorund means that electric potential energy is converted to kinetic energy
7. some energy is alaso transfered to the air

Question 13

describe charge in circuts

Answer 13

• comprised of lots of electron, moving like a fluid
• charge does work on components transfering energy

Question 14

what is potential difference in circuits?

Answer 14

the change in electric potential energy per unit charge between two points due to the charge doing work on circuit components

Question 15

what is an electromotive force?

Answer 15

• term used for componets that increase the elctrci potential energy per charge
• does work on the charge
• electric potential energy of the charge increases

Question 16

what are potential differences

term in circuit

Answer 16

• used when charge does work on components
• electric potential energy of charge decreases

Question 17

define electromotive force

Answer 17

the change in electric potential energy per unit charge between two points due to work being done on the charge