Quiz
AQA GCSE Physics Unit 2.5
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Questions in this quiz (20)
1True or false? In alternating current, the potential difference switches between positive and negative values.
- ATrue
- BFalse
2Which of these statements are true about the UK mains supply?
- AFrequency of 50Hz
- BFrequency of 60Hz
- CPeak voltages of +230 and -230V
- DPeak voltages of +325 and -325V
- EDirect voltage of 230V
- FDirect voltage of 325V
3True or false? The device used to show how alternating potential difference varies with time is called a voltascope.
- ATrue
- BFalse
4What is the peak voltage of an AC supply whose peak is 3.4cm from the centre and whose Y-gain control is 0.75V/cm?
- A2.55V
- B4.53V
- C4.15V
- D2.65V
5What is the frequency of an AC supply if the length of one cycle is 4cm and the time-base control is 15ms/cm?
- A60Hz
- B0.06Hz
- C16.67Hz
- D0.02Hz
6What colour cable is the live wire in a three-core cable?
- AGreen and yellow
- BBrown
- CBlue
7What colour cable is the neutral wire in a three-core cable?
- AGreen and yellow
- BBrown
- CBlue
8What colour cable is the earth wire in a three-core cable?
- AGreen and yellow
- BBrown
- CBlue
9True or false? Appliances with plastic cases such as hairdryers only need two-core cable as they are doubly-insulated and do not need to be earthed.
- ATrue
- BFalse
10True or false? A circuit breaker is a piece of metal that melts if the current flowing through it is too large.
- ATrue
- BFalse
11What fuse would you need to buy if an appliance drew 2.7A of current?
- A1A
- B2A
- C3A
- D5A
- E13A
12True or false? Residual current circuit breakers break if the current in the live wire is different to the current in the neutral wire.
- ATrue
- BFalse
13Which of these equations connecting power, energy and time is correct?
- AP = E/t
- BP = t/E
- CP = Et
14Which of these equations connecting power, current and potential difference is correct?
- AP = I/V
- BP = V/I
- CP = IV
15What fuse would I buy if I bought a 230V, 1000W appliance?
- A1A
- B2A
- C3A
- D5A
- E13A
16How many units of charge would each electron carry if they carried 6A of current in 1 minute?
- A10C
- B0.1C
- C360C
17True or false? The equation connecting charge, potential difference and energy is Q = VE.
- ATrue
- BFalse
18What would be the potential difference of circuit in which 2000J of energy were carried by electrons with a charge of 4C?
- A8000V
- B500V
- C0.002V
19True or false? Connecting too many appliances to a single socket can lead to overheating.
- ATrue
- BFalse
20Which of these are considered energy-efficient bulbs?
- AFilament bulb
- BCompact fluorescent bulbs
- CLight-emitting diodes
- DHalogen bulbs
Information
- Description
- Twenty questions on the fifth section of Unit 2 in AQA GCSE Physics: Mains electricity.
- Author
- Matthew T
- Language
- English
- Views
- 467
- History
- Created on 17 May 2014 · updated on 23 Dec 2016
- Tags
- Rating
- 4.6 out of 5 · 5 ratings Rate this quiz