Lesson 6.2.1.4
6.2.1.4 Resistors Quiz: AQA Combined Science, Unit 19
20 questions
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Lesson 6.2.1.4, Resistors: 20 multiple choice questions for the AQA GCSE Combined Science (8464), Unit 19: Electricity, written with Revision Ninja.
Host it live on the board and students join with a game code on their own devices, or revise alone with Free Play. The answers are revealed in the game.
The 20 questions
-
For an ohmic conductor at constant temperature, how is current related to potential difference?
- Unrelated
- Exponentially related
- Directly proportional
- Inversely proportional
-
Which electrical component changes its resistance as current changes its temperature?
- Filament lamp
- Fixed resistor
- Standard wire
- Ohmic conductor
-
How does the resistance of a filament lamp change as its temperature rises?
- It becomes zero
- It stays constant
- It increases
- It decreases
-
Which component allows current in one direction only?
- Diode
- Resistor
- Cell
- Lamp
-
What is the resistance of a diode when connected in the reverse direction?
- Zero
- Very high
- Very low
- Constant
-
Which of these components has a resistance that is NOT constant?
- Standard wire
- Thermistor
- Ohmic conductor
- Fixed resistor
-
What happens to the resistance of an ohmic conductor as current changes?
- Increases
- Stays constant
- Drops to zero
- Decreases
-
How does the resistance of a thermistor behave as temperature increases?
- Drops to zero
- Increases
- Decreases
- Stays constant
-
An ohmic resistor has 4 V across it and 0.2 A flowing. If the pd doubles to 8 V at constant temperature, what is the current?
- 0.2 A
- 0.8 A
- 0.4 A
- 0.1 A
-
What current flows through a diode connected in reverse across a supply?
- Maximum current
- Negligible current
- Double current
- Alternating current
-
What happens to the current in a filament lamp as its temperature increases?
- Current increases
- Current stays constant
- Current decreases
- Current stops completely
-
What does a straight-line current-voltage graph passing through the origin indicate about a conductor?
- Diode
- Thermistor
- Ohmic conductor
- Filament lamp
-
Why does a filament lamp's current rise more slowly as potential difference increases?
- Power vanishes
- Resistance drops
- Temperature increases
- Voltage decreases
-
What property of a diode prevents current flowing in the reverse direction?
- High voltage
- Low temperature
- High resistance
- Zero resistance
-
Which component does not have a constant resistance as current changes?
- Constant wire
- Fixed resistor
- Filament lamp
- Ohmic resistor
-
How does a thermistor's resistance change as temperature increases?
- Resistance increases
- Resistance decreases
- Resistance drops to zero
- Resistance stays constant
-
In how many directions can current normally flow through a standard diode?
- One direction
- Any direction
- Two directions
- Three directions
-
What is the key characteristic of a diode's current-voltage behaviour?
- Linear graph
- Flows one way
- Constant resistance
- Ohmic response
-
How does a filament lamp's resistance compare to an ohmic resistor at high currents?
- Lamp is higher
- Both are equal
- Both are zero
- Lamp is lower
-
Which component has a resistance that decreases as light intensity increases?
- Diode
- Resistor
- Thermistor
- LDR
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