P4 Electric Circuits - AQA Trilogy Physics

studied byStudied by 0 people
0.0(0)
Get a hint
Hint

Circuit Symbols

1 / 10

flashcard set

Earn XP

11 Terms

1

Circuit Symbols

knowt flashcard image
New cards
2

Current

  • electrons passing through a circuit

  • charge flow (C) = current (A) x time (s)

  • Q = I x t

New cards
3

Potential Difference / Voltage

  • potential difference (V) = energy transferred (J) / charge (C)

  • V = E / Q

New cards
4

Resistance

  • resistance (Ω) = potential difference (V) / current (A)

  • R = V / I

New cards
5

Ohm’s Law

  • the current through a resistor at a constant temperature is directly proportional to the potential difference across the resistor

New cards
6

Filament Lamp

  • the resistance increases if the temperature increases

<ul><li><p>the resistance <mark data-color="purple" style="background-color: purple; color: inherit">increases</mark> if the temperature <mark data-color="purple" style="background-color: purple; color: inherit">increases</mark></p></li></ul><p></p>
New cards
7

Diode

knowt flashcard image
New cards
8

Thermistor

  • resistance decreases if the temperature increases

New cards
9

Light-Dependant Resistor (LDR)

  • resistance decreases as the light intensity increases

New cards
10

Series Circuit

  • the current in each component is the same

  • the total potential difference is shared between components

  • adding components resistances gives the total resistance

  • adding more resistors increases the total resistance - the current through the resistors is reduced and the total pd across them is unchanged

New cards
11

Parallel Circuit

  • the total current is the sum of the currents through the separate components

  • the pd across each component is the same

  • the bigger the resistance of a component, the smaller the current that will pass through

  • adding more resistors decreases the total resistance - the total current through the resistors is increases and the total pd is unchanged

New cards

Explore top notes

note Note
studied byStudied by 5 people
... ago
5.0(1)
note Note
studied byStudied by 191 people
... ago
5.0(2)
note Note
studied byStudied by 20 people
... ago
5.0(1)
note Note
studied byStudied by 11 people
... ago
5.0(1)
note Note
studied byStudied by 50 people
... ago
5.0(1)
note Note
studied byStudied by 15 people
... ago
4.0(1)
note Note
studied byStudied by 123892 people
... ago
4.9(601)

Explore top flashcards

flashcards Flashcard (23)
studied byStudied by 1 person
... ago
5.0(1)
flashcards Flashcard (67)
studied byStudied by 38 people
... ago
5.0(2)
flashcards Flashcard (46)
studied byStudied by 417 people
... ago
5.0(3)
flashcards Flashcard (67)
studied byStudied by 15 people
... ago
4.5(2)
flashcards Flashcard (25)
studied byStudied by 12 people
... ago
5.0(1)
flashcards Flashcard (26)
studied byStudied by 25 people
... ago
5.0(1)
flashcards Flashcard (58)
studied byStudied by 51 people
... ago
5.0(1)
flashcards Flashcard (55)
studied byStudied by 17 people
... ago
5.0(1)
robot