IG Phy – Resistance (I)
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Question 1 of 13
1. Question
1 point(s)The relationship between potential difference, current, and resistance in electrical circuits is given by V=IR.
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Question 2 of 13
2. Question
1 point(s)Resistance is measured in ohms (Ω).
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Question 3 of 13
3. Question
1 point(s)The formula to calculate resistance is R=IV.
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Question 4 of 13
4. Question
1 point(s)In a circuit, resistance can be calculated without knowing the current.
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Question 5 of 13
5. Question
1 point(s)The resistance of a component can change if the component heats up.
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Question 6 of 13
6. Question
1 point(s)The resistance of a wire is directly proportional to its length.
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Question 7 of 13
7. Question
1 point(s)The resistance of a wire is inversely proportional to its cross-sectional area.
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Question 8 of 13
8. Question
1 point(s)The resistance of a wire is independent of its material.
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Question 9 of 13
9. Question
1 point(s)A wire with twice the diameter will have twice the resistance.
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Question 10 of 13
10. Question
1 point(s)The I-V graph for a filament lamp is a straight line.
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Question 11 of 13
11. Question
1 point(s)The I-V graph for a resistor at constant temperature is a straight line.
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Question 12 of 13
12. Question
1 point(s)A diode conducts current in both directions.
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Question 13 of 13
13. Question
1 point(s)Superconductors have zero electrical resistance below a critical temperature.
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