IG Phy – Resistance (II)
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Question 1 of 15
1. Question
1 point(s)Superconductors are used in MRI scanning in medicine.
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Question 2 of 15
2. Question
1 point(s)The resistance of a superconducting material increases below the critical temperature.
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Question 3 of 15
3. Question
1 point(s)The search for superconductors now focuses more on alloys than on elements.
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Question 4 of 15
4. Question
1 point(s)Superconductors can be used to create magnetic fields for Maglev trains.
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Question 5 of 15
5. Question
1 point(s)The unit for potential difference is the joule (J).
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Question 6 of 15
6. Question
1 point(s)Resistance is calculated from the formula R=IV.
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Question 7 of 15
7. Question
1 point(s)To measure the resistance of a component, an ammeter is connected in parallel.
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Question 8 of 15
8. Question
1 point(s)A voltmeter must be connected in parallel to measure potential difference.
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Question 9 of 15
9. Question
1 point(s)Resistance can be measured directly with a multimeter.
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Question 10 of 15
10. Question
1 point(s)The length of a wire does not affect its resistance.
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Question 11 of 15
11. Question
1 point(s)A resistor\’s resistance remains constant regardless of temperature changes.
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Question 12 of 15
12. Question
1 point(s)Resistance is a measure of how difficult it is for electric current to flow through a material.
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Question 13 of 15
13. Question
1 point(s)Superconductors allow current to flow without any loss of energy.
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Question 14 of 15
14. Question
1 point(s)The I-V characteristic of a diode shows it conducts equally well in both directions.
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Question 15 of 15
15. Question
1 point(s)The critical temperature for superconductors is typically above room temperature.
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