AQA GCSE Physics Unit 2.5

Description

Twenty questions on the fifth section of Unit 2 in AQA GCSE Physics: Mains electricity.
Matthew T
Quiz by Matthew T, updated more than 1 year ago
Matthew T
Created by Matthew T about 10 years ago
405
27

Resource summary

Question 1

Question
True or false? In alternating current, the potential difference switches between positive and negative values.
Answer
  • True
  • False

Question 2

Question
Which of these statements are true about the UK mains supply?
Answer
  • Frequency of 50Hz
  • Frequency of 60Hz
  • Peak voltages of +230 and -230V
  • Peak voltages of +325 and -325V
  • Direct voltage of 230V
  • Direct voltage of 325V

Question 3

Question
True or false? The device used to show how alternating potential difference varies with time is called a voltascope.
Answer
  • True
  • False

Question 4

Question
What 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?
Answer
  • 2.55V
  • 4.53V
  • 4.15V
  • 2.65V

Question 5

Question
What is the frequency of an AC supply if the length of one cycle is 4cm and the time-base control is 15ms/cm?
Answer
  • 60Hz
  • 0.06Hz
  • 16.67Hz
  • 0.02Hz

Question 6

Question
What colour cable is the live wire in a three-core cable?
Answer
  • Green and yellow
  • Brown
  • Blue

Question 7

Question
What colour cable is the neutral wire in a three-core cable?
Answer
  • Green and yellow
  • Brown
  • Blue

Question 8

Question
What colour cable is the earth wire in a three-core cable?
Answer
  • Green and yellow
  • Brown
  • Blue

Question 9

Question
True 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.
Answer
  • True
  • False

Question 10

Question
True or false? A circuit breaker is a piece of metal that melts if the current flowing through it is too large.
Answer
  • True
  • False

Question 11

Question
What fuse would you need to buy if an appliance drew 2.7A of current?
Answer
  • 1A
  • 2A
  • 3A
  • 5A
  • 13A

Question 12

Question
True or false? Residual current circuit breakers break if the current in the live wire is different to the current in the neutral wire.
Answer
  • True
  • False

Question 13

Question
Which of these equations connecting power, energy and time is correct?
Answer
  • P = E/t
  • P = t/E
  • P = Et

Question 14

Question
Which of these equations connecting power, current and potential difference is correct?
Answer
  • P = I/V
  • P = V/I
  • P = IV

Question 15

Question
What fuse would I buy if I bought a 230V, 1000W appliance?
Answer
  • 1A
  • 2A
  • 3A
  • 5A
  • 13A

Question 16

Question
How many units of charge would each electron carry if they carried 6A of current in 1 minute?
Answer
  • 10C
  • 0.1C
  • 360C

Question 17

Question
True or false? The equation connecting charge, potential difference and energy is Q = VE.
Answer
  • True
  • False

Question 18

Question
What would be the potential difference of circuit in which 2000J of energy were carried by electrons with a charge of 4C?
Answer
  • 8000V
  • 500V
  • 0.002V

Question 19

Question
True or false? Connecting too many appliances to a single socket can lead to overheating.
Answer
  • True
  • False

Question 20

Question
Which of these are considered energy-efficient bulbs?
Answer
  • Filament bulb
  • Compact fluorescent bulbs
  • Light-emitting diodes
  • Halogen bulbs
Show full summary Hide full summary

Similar

GCSE AQA Physics - Unit 3
James Jolliffe
GCSE AQA Physics 1 Energy & Efficiency
Lilac Potato
P2 Radioactivity and Stars
dfreeman
P2a revision (part 1)
juliasutton
P2a (part 2)
juliasutton
P3 Medical Applications of Physics
dfreeman
AQA Physics P1 Quiz
Bella Statham
AQA Physics 3 - Medical Applications of Physics
10jgorman
AQA GCSE Physics Unit 2.2
Matthew T
AQA GCSE Physics Unit 2.1
Matthew T