Component characteristics

Question 1

potential difference is what

Answer 1

shared between each component

Question 2

what does an ohmic conductor mean

Answer 2

its applies to ohms law

Question 3

does a filament apply to ohms law

Answer 3

no

Question 4

why does a filament lamp not apply to ohms law

Answer 4

the graph shows it is not directly proportional the potential difference is not directly prop to the current

Question 5

why is a filament lamp not apply to ohms law

Answer 5

this is due to the atoms in the metal filament vibrating as the temp increases meaning that they resist the passage of the electrons through the filament more

Question 6

what happens to the resistance of any metal as the temp increases

Answer 6

increases

Question 7

why does the curve on the filament lamp graph get less sleep

Answer 7

more current means more temp and more temp means greater resistance

Question 8

is diode an ohmic conductor

Answer 8

no

Question 9

when does an diode show potential difference

Answer 9

• only show a current when pot difference is positive
• they do this by having a really high resistance in the other direction so a current can’t flow the other way

Question 10

do LDRs and thermistors apply to ohms law

Answer 10

no- both resistance resistance decreases as the temp or light intensity increases