a) Conductors

0.0(0)
studied byStudied by 0 people
0.0(0)
linked notesView linked note
full-widthCall Kai
learnLearn
examPractice Test
spaced repetitionSpaced Repetition
heart puzzleMatch
flashcardsFlashcards
GameKnowt Play
Card Sorting

1/9

encourage image

There's no tags or description

Looks like no tags are added yet.

Study Analytics
Name
Mastery
Learn
Test
Matching
Spaced

No study sessions yet.

10 Terms

1
New cards

  • define number density

  • the number of free electrons per volume in a material

2
New cards

  • state the formula for number density

  • number density (m-3) = number of free electrons / volume (m3)

3
New cards

  • state how number density affects conductivity

  • larger number density → stronger conductivity

4
New cards

  • state the overall electrical conductivity of an insulator

  • weak

5
New cards

  • state the number density of an insulator

  • close to zero

6
New cards

  • state the overall electrical conductivity of a semiconductor

  • moderate

7
New cards

  • state the number density of a semiconductor

  • around 1018m-3

8
New cards

  • state the overall electrical conductivity of a conductor

  • strong

9
New cards

  • state the number density of a conductor

  • around 1028m-3

10
New cards

  • explain how to increase the conductivity of a conductor

  • the electrons would have to move faster

    • by increasing the potential difference

    • by decreasing the resistance