Home
Explore
Exams
Search for anything
Login
Get started
Home
Science
Physics
Circuits
Electricity and Magnetism
0.0
(0)
Rate it
Studied by 5 people
Knowt Play
Learn
Practice Test
Spaced Repetition
Match
Flashcards
Card Sorting
1/20
Earn XP
Description and Tags
Physics
Circuits
Electricity
Magnetism
Charges
9th
Add tags
Study Analytics
All Modes
Learn
Practice Test
Matching
Spaced Repetition
Name
Mastery
Learn
Test
Matching
Spaced
No study sessions yet.
21 Terms
View all (21)
Star these 21
1
New cards
Electric Current (I)
Flow of charge (electrons) in a fixed direction.
* Measured in Amperes (A)
* Only measured in a series circuit
2
New cards
Static Electric Current
A current that does not move/flow.
3
New cards
Electric Charge (C)
Imbalance in the number of protons and electrons.
* Measured in coulombs (C)
4
New cards
Voltage (V)
When one joule of energy is given to one coulomb.
* V= E/Q(C)
5
New cards
Electron Pumps
‘Pump’ electrons by pulling them from one end of a wire and pushing them into the other.
* Convert chemical energy to electricity.
* (E.g: Cells/batteries)
6
New cards
Cell
Transfers energy to electrons.
7
New cards
Battery
Two or more cells.
8
New cards
Conductor
Materials that allow electrons to pass through them well.
* (E.g: Metals have free electrons between atoms, making them great conductors)
9
New cards
Insulator
Materials that do not allow electrons to pass through them well.
* (E.g: Rubber has tightly bound electrons)
10
New cards
Semi-Conductor
Materials that are neither conductors nor insulators.
* (E.g silicon and germanium are good conductors when warm, poor when cold)
11
New cards
Electric Circuit
A continuous path of wires and electrical components where electrons can flow. Controlled by a switch between two terminals of a cell or battery.
12
New cards
Series Circuit
A circuit with only one electric current flows throughout.
* I₁ = I₂ = I₃ = I₄
13
New cards
Parallel Circuit
A circuit in which the current is split to power two or more electrical components.
* The voltage of each branch is the same, but the currents may vary
* IT = I₁ + I₂ + I₃ + I₄
14
New cards
When more bulbs are added in a series circuit, the brightness_____.
Dims
* The current is split across each bulb and grows weaker.
15
New cards
When more bulbs are added in a parallel circuit, the brightness ______.
Stays the same
* The current is split evenly across each bulb.
16
New cards
Electric Resistance (R)
When a current experiences opposition as it passes through a material cue to collisions of the electrons.
* Measured in ohms (Ω)
17
New cards
Resistors
Materials that oppose/resist the flow of electric currents.
18
New cards
Insulators have _______ resistance.
Infinite
19
New cards
Conductors have _______ resistance.
Near-zero
20
New cards
Semi-conductors have _______ resistance.
Some
21
New cards
Resistors have _______ resistance.
Finite
Explore top notes
2.4 The Dead Zone and Solutions to Water Pollution
Updated 1014d ago
Note
Preview
Chapter 13 - European State Consolidation in the Seventeenth and Eighteenth Centuries
Updated 1216d ago
Note
Preview
H18 EIWITTEN
Updated 845d ago
Note
Preview
Unit 2 Molecular Energy
Updated 1029d ago
Note
Preview
learning and motivation chap 1
Updated 1095d ago
Note
Preview
Microbiology Chapter 8: Microbial Genetics
Updated 330d ago
Note
Preview
Unit 1 APSYCH Flashcards
Updated 1104d ago
Note
Preview
Unit 4: Systems of Particles and Linear Momentum
Updated 893d ago
Note
Preview
Explore top flashcards
flash card for mathe
Updated 328d ago
Flashcards (26)
Preview
Vocab-Set 3
Updated 14d ago
Flashcards (36)
Preview
Art Forms and Practices in the Philippines
Updated 878d ago
Flashcards (83)
Preview
PHILO Lesson 5
Updated 615d ago
Flashcards (21)
Preview
Lecture 4: Sodium and Water Balance II
Updated 188d ago
Flashcards (47)
Preview
Fr2Hpc_avoir_être_mixtes (angl/fr)
Updated 546d ago
Flashcards (32)
Preview
Survey Into Forensic Science FS-110
Updated 955d ago
Flashcards (51)
Preview
Spanish Commands/Imperative
Updated 726d ago
Flashcards (54)
Preview