Brainscape's Knowledge GenomeTM

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


See full index

GCSE Physics > Domestic Electricity > Flashcards

Domestic Electricity Flashcards

1
Q

What three wires are in a ring main

A

Live wire
Neutral wire
Earth wire

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

What colour is the live wire

A

Brown

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

What colour is the neutral wire

A

Blue

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

What colour is the earth wire

A

Green and yellow

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

What is the live wire

A

Carries current to an appliance at a high voltage

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

What is the neutral wire

A

Completes the circuit and carries current at zero voltage.

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

What is the Earth wire

A

A safety wire that takes high voltage electricity away from the appliance into the earth if something goes wrong

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

What is an example of when the earth wire is used

A

Short circuit

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

Advantages of Ring Main (5)

A

-There are two paths for current
- cables can be made thinner
- each part of the cable carries less current
- convenient - sockets can be placed anywhere on the ring
- each socket has 230V applied and they can be operated separately

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

Unit for equation E = P x T

A

Energy(J) = Power(W) x Time (s)

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

What is the unit for power

A

watts

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

.

A

Hours

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

What is the “unit’ for energy

A

Kilowatt hours

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

What is another word for Kilowatt hour

A

A ‘unit’

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

What is ac

A

Alternating current

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

What is dc

A

Direct current

17
Q

What is direct current

A

Flows in a constant direction. Produced from batteries in devices.

18
Q

What is alternating current

A

Current that alternates, or changes constantly. It is produced by power plants and comes out of plug sockets.

19
Q

What is an MCB

A

Miniature circuit breaker

20
Q

RCCB

A

Residual Current Circuit Breaker

21
Q

How does a miniature circuit breaker work

A

Current surges and becomes to high. The electromagnet becomes stronger and the circuit broken.

22
Q

How does an RCCB work

A

There is a difference in current between the live and neutral wire. The electromagnetic grows stronger on one side, breaking the circuit.

23
Q

How is an MCB better than a fuse

A
  • it reacts faster/more sensitive
    -it is reusable
24
Q

When would an RCCB be used

A

When the neutral wire is cut by a power tool

25
Q

Fuse

A

A thin wire that melts when the current is too high.

26
Q

Function of the fuse

A

Prevents the device from overheating

27
Q

Function of MCB

A

Prevent devices from overheating

28
Q

Function of RCCB

A

Protect the user from serious electric shock

GCSE Physics (5 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2025 Bold Learning Solutions. Terms and Conditions