GCSE Physics – Current-potential difference graphs
Learning Objectives
-I can draw and explain current-potential difference graphs for ohmic conductors, filament lamps and diodes
-I can explain the change in resistance of a thermistor as the temperature changes
-I can explain the change in resistance of an LDR as the light intensity changes
Quiz Summary
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Question 1 of 25
1. Question
Is resistance constant for resistors?
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Question 2 of 25
2. Question
How do we test the resistance of a component?
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Question 3 of 25
3. Question
How is a voltmeter connected?
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Question 4 of 25
4. Question
How is an ammeter connected?
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Question 5 of 25
5. Question
What is a current voltage graph?
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Question 6 of 25
6. Question
A straight diagonal line on an I-V graph represents what?
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Question 7 of 25
7. Question
What does the INVERSE gradient of a current/voltage graph represent?
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Question 8 of 25
8. Question
If resistor A has an I-V line above resistor B, which has the highest resistance?
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Question 9 of 25
9. Question
If resistor A has an I-V line below resistor B, which has the highest resistance?
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Question 10 of 25
10. Question
What type of conductor produces a straight diagonal line on an I-V graph?
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Question 11 of 25
11. Question
What does Ohmic conductor mean?
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Question 12 of 25
12. Question
What does the I-V graph for an Ohmic conductor look like?
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Question 13 of 25
13. Question
What are thermistors used for?
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Question 14 of 25
14. Question
What happens to a thermistor as temperature increases?
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Question 15 of 25
15. Question
What would you use to change the temperature of the thermistor in an experiment?
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Question 16 of 25
16. Question
What is an LDR?
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Question 17 of 25
17. Question
What are LDRs used for?
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Question 18 of 25
18. Question
What happens to an LDR when light intensity increases?
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Question 19 of 25
19. Question
What happens to an LDR when light intensity decreases?
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Question 20 of 25
20. Question
How would you conduct an experiment with an LDR?
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Question 21 of 25
21. Question
Why does the resistance of a filament lamp increase?
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Question 22 of 25
22. Question
What does the I-V graph for a filament bulb look like?
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Question 23 of 25
23. Question
What does the I-V graph for a diode look like?
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Question 24 of 25
24. Question
Why does the I-V graph of a diode have a flat line on the negative V-axis?
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Question 25 of 25
25. Question
What is the resistance of a diode for negative voltage values?
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