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AQA GCSE Physics Unit 2.4

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Twenty questions on the fourth section of Unit 2 in AQA GCSE Physics: Current electricity.
Matthew T
Quiz by Matthew T, updated more than 1 year ago
Matthew T
Created by Matthew T over 10 years ago
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Resource summary

Question 1

Question
Which generator is used to generate high potential differences using static electricity?
Answer
  • Van der Waals generator
  • Van der Graaff generator
  • Van Gogh generator

Question 2

Question
What makes a Perspex rod become positively charged?
Answer
  • Gain of electrons
  • Loss of electrons

Question 3

Question
What makes a polythene rod become negatively charged?
Answer
  • Gain of electrons
  • Loss of electrons

Question 4

Question
What is this the circuit symbol for?
Image:
diode_symbol (image/png)
Answer
  • Indicator
  • Diode
  • Cell
  • Light-emitting diode

Question 5

Question
What is this the circuit symbol for?
Image:
variable_resistor_symbol (image/png)
Answer
  • Heater
  • Fixed resistor
  • Fuse
  • Variable resistor

Question 6

Question
True or false? Current can be defined as the rate of the flow of charge (coulombs per second).
Answer
  • True
  • False

Question 7

Question
True or false? Potential difference can be defined as the work done by each unit of charge (joules per coulomb).
Answer
  • True
  • False

Question 8

Question
What is the SI unit of resistance?
Answer
  • Tesla
  • Lux
  • Ampere
  • Ohm
  • Volt
  • Coulomb

Question 9

Question
True or false? The equation connecting current, resistance and potential difference is R = VI.
Answer
  • True
  • False

Question 10

Question
What is an ohmic conductor?
Answer
  • A special type of conductor developed by Georg Ohm
  • An electrical component whose current and potential difference are directly proportional at a constant resistance and temperature
  • A conductor whose resistance is greater than 100 ohms

Question 11

Question
For which electrical component would this current-potential difference graph apply?
Image:
filament_bulb_graph (image/png)
Answer
  • Thermistor
  • Light-dependent resistor
  • Filament bulb
  • Diode

Question 12

Question
For which electrical component would this current-potential difference graph apply?
Image:
diode_graph (image/png)
Answer
  • Thermistor
  • Light-dependent resistor
  • Filament bulb
  • Diode

Question 13

Question
True or false? The resistance of a thermistor decreases as temperature increases.
Answer
  • True
  • False

Question 14

Question
True or false? The resistance of a light-dependent resistor increases as light intensity increases.
Answer
  • True
  • False

Question 15

Question
True or false? In a series circuit, the same current passes through all components.
Answer
  • True
  • False

Question 16

Question
True or false? In a series circuit, the potential difference across each component is the same.
Answer
  • True
  • False

Question 17

Question
If there were two resistors in series, each with a resistance of 0.6Ω, what would be the total resistance?
Answer
  • 0.6Ω
  • 6Ω
  • 1.2Ω
  • 12Ω

Question 18

Question
True or false? In a parallel circuit, the total current is shared through the components.
Answer
  • True
  • False

Question 19

Question
True or false? In a parallel circuit, the potential difference is shared across the components.
Answer
  • True
  • False

Question 20

Question
If there were two resistors in parallel, each with a resistance of 0.6Ω, what would be the resistance in any one "loop" of the circuit?
Answer
  • 0.6Ω
  • 6Ω
  • 1.2Ω
  • 12Ω
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