Current

Question 1

What is current measured in?

Answer 1

Amps

Question 2

One amp equals…

Answer 2

6.241 x 10*18 electrons per second

Question 3

What do you need for an electrical battery?

Answer 3

Container
Positive plate
Negative plate
Electrolyte
Conductor

Question 4

How does transfer of electrons work in a battery

Answer 4

Electrons move to the positive plate making that plate negative by the reaction of the electrolyte and then the electrons transfer through the conductor as it’s attracted to the now positively charged plate

Question 5

What is electron flow?

Answer 5

Neg to pos

Question 6

Difference between a copper wire being plugged into an energy supply and not being connected

Answer 6

The electrons are no longer free roaming when plugged into energy and electric current is formed as the electrons start to flow around the conductor but without the energy the electrons remain free roaming

Question 7

What makes an ion

Answer 7

An atom with too many or too little electrons

Question 8

What’s a positive ion

Answer 8

When an atom has more protons than electrons making it positively charged

Question 9

What’s a negative ion

Answer 9

An atom with more electrons than protons making it negatively charged

Question 10

What makes insulators useful

Answer 10

They have a strong connection from the nucleus to the outer electrons so they do lose them easily meaning it harder to conduct electricity from them so you don’t accidentally zap yourself as they don’t conduct well

Question 11

Name 3 good insulators

Answer 11

Glass
Plastic
Rubber

Question 12

Example of an insulator and where it would be used

Answer 12

Rubber-around exposed wires to protect from shock

Question 13

What is a conductor

Answer 13

A molecule with a weak attraction from the outer electron to the nucleus meaning it can lose electrons easily allowing for electrical current to flow through very easily due to the amount of free electrons

Question 14

What makes a good conductor

Answer 14

Lots of electrons and shells meaning weaker attraction to the nucleus so it can loose more electrons and conduct electrical flow easily

Question 15

Name 3 good conductors

Answer 15

Copper
Gold
Carbon

Question 16

What causes an electron to become a free electron?

Answer 16

Weak attraction from the outer electron to the nucleus allowing the electron the leave orbit with ease and become free

Question 17

What makes electrical current?

Answer 17

Electrical current is formed when free electrons are inside a conductor and are flowing

Question 18

Atom shell electron numbering
(First three)

Answer 18

2
8
18

Question 19

What is a balanced atom?

Answer 19

A balanced atom is an atom with an equal amount of protons too electrons

Question 20

What is the outer most shell called on an atom?

Answer 20

Valence shell

Question 21

What are the outer most electrons called

Answer 21

Valence electrons

Question 22

What is the relationship of distance in an atom between electrons and the nucleus?

Answer 22

The further away the electron in shells the weaker the attraction, the closer the stronger

Question 23

How is a magnetic field created?

Answer 23

When current flows through a conductor heating up creating a magnetic field

Question 24

What charge are protons charged with?

Answer 24

Positive

Question 25

What charge are electrons charged with?

Answer 25

Negative