Brainscape's Knowledge GenomeTM

Browse over 1 million classes created by top students, professors, publishers, and experts.


See full index

Gcse Phy Spec PAPER 1 > Electricity > Flashcards

Electricity Flashcards

You may prefer our related Brainscape-certified flashcards:
GCSE Geography - AQA flashcards GCSE Religious Studies - Edexcel Route B flashcards GCSE Religious Studies - Eduqas Route A flashcards GCSE Religious Studies - Edexcel Route A flashcards GCSE Religious Studies - Eduqas Route B flashcards
1
Q

For electrical charge to flow what must be ensured

A

The circuit must be closed and must include potential difference

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

What is electric current

A

A flow of electrical charge

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

What is the letter for charge flow

A

Q

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

What is charge flow measure in

A

Columbus (C)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

What is the letter for current

A

I

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

What is current measured in

A

Amps (A)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

What does a current have the same value at

A

Any point in a single closed loop

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

What does the current through a component depend on

A

On both the resistor of the component and the potential difference across the component

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

The grater the resistance is of the component the what

A

The smaller the current for a given potential difference across the component

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

What is the equation for current ,potential offence and resistance

A

Potential difference =
current x resistance

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

What is the letter for potential difference

A

V

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

What is potential difference measured in

A

Volts (V)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

What is the letter for resistance

A

R

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

What is resistance measured in

A

Ohms (horse shoe thingy)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

Describe the current thro a ohmic conductor

A

It’s directly proportional to the potential difference across the resistor

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

Describe the resistance of compounds such as lamps ,diodes ,thermistors and LDRs

A

The resistance is not constant as it changes with the current through the component

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
17
Q

What did the resistance if a filament lamp inc

A

Teh resistance of a filament lamp Increases as the temperature of the filament increases

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
18
Q

How does the current in a diode flow

A

In one direction only

19
Q

Describe the diodes residence

A

The diode has a very high resistance in the reverse direction

20
Q

As the residence in a thermistor dec what happens

A

The temp inc

21
Q

What happens as the resistance of an LDR as it dec

A

The light intensity inc

22
Q

Two types of circuits

A

Series and parallel

23
Q

Describe components connected in a series circuit

A

-there is the same current through each component
-the total potential difference of the power supply is shared between components
-the total resistance of two components is the sum of the resistance of each component

24
Q

What is the equation for the total resistance of two components

A

R total =R1+R2

25
Q

Describe components connected in a parallel circuit

A

-the potential difference across the component is the same
-the total current through the whole circuit is the sum of the currents through the separate components
-the total resistance of two resistors is less than the resistance of the smallest individual resistor

26
Q

What colour is the live wire

A

Brown

27
Q

What colour is the neutral wire

A

Blue

28
Q

What colour is the earth wire

A

Green and yellow stripes

29
Q

What does the live wire carry

A

The alternating potential difference from the supply

30
Q

What does the neutral wire do

A

It Completes the circuit

31
Q

What is the earth wire

A

It’s a safety wire to stop the appliance form becomibg live

32
Q

What is the potential difference between the live and earth wire

A

0v - 230v

33
Q

What is the neutral wires potential difference

A

It at or near 0v

34
Q

When does the earth wire carry potential difference

A

When there is a fault

35
Q

What is the two equations for power

A

Power= potential diff x current

Power= (current)2 x resistance

36
Q

What is the letter for power

A

P

37
Q

What is power measured in

A

Watts (w)

38
Q

What does the amount of energy an appliance transfer depend I.

A

How long the appliance is switched on for and the power of the appliance

39
Q

When is work done

A

When charge flows in a circuit

40
Q

What are the two equations for energy

A

Energy transf = power x time

Energy transf =
charge flow x potential diff

41
Q

What is the national grid system

A

A system of cables and transformers linking power stations to consumers

42
Q

Where is electrical power transferred form

A

Form power stations to consumers using the national grid

43
Q

What are set up transformers used for

A

To inc the potential difference form the power station to the transmission cables

44
Q

What are step down tranformers used to do

A

To decrease to a much lower value , the potential difference for domestic use

Gcse Phy Spec PAPER 1 (4 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2024 Bold Learning Solutions. Terms and Conditions