Practice Temperature Dependence Of Resistance (2.5) - Current Electricity

Practice: Temperature Dependence of Resistance

Lesson 2.5Current Electricity

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9 questions

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2 cards from this section. Quick, good the night before a test.
Exercise
6 questions · about 4 min · pass mark 70%. Hints available.
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Quiz
3 questions · about 2 min · pass mark 70%. Hints available.
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6 sample questions

Question 1.
What happens to the resistance of a conductor as temperature increases?
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Think of the relationship expressed by the formula involving temperature.
Question 2.
Define temperature coefficient of resistance (α).
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Focus on what it measures concerning materials.
3Question 3.
As temperature increases, what happens to the resistance of a conductor?
- Increases
- Decreases
- Remains the same
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Think of the formula linking resistance with temperature.
4Question 4.
True or False: Semiconductors have a decreasing resistance as the temperature increases.
- True
- False
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Recall the behavior of semiconductors with temperature changes.
Question 5.
A resistor with a temperature coefficient of 0.004/°C has an initial resistance of 10Ω at 25°C. Calculate its resistance at 75°C.
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Apply the resistance formula carefully, paying attention to temperature differences.
Question 6.
Discuss how you would design a circuit involving both a temperature-sensitive semiconductor and a typical conductor. What considerations would you take into account regarding temperature changes?
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Think about how both components respond to temperature changes individually and together.

5 more questions in this section. Enroll free to practise them all.