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Practice Questions
Test your understanding with targeted questions related to the topic.
Question 1
Easy
What is the general formula for resistivity in metals as it relates to temperature?
π‘ Hint: Remember how \\\\$ a \\\\$ influences resistance.
Question 2
Easy
Define resistivity.
π‘ Hint: Think about how it affects current flow.
Practice 4 more questions and get performance evaluation
Interactive Quizzes
Engage in quick quizzes to reinforce what you've learned and check your comprehension.
Question 1
What is the effect of temperature on the resistivity of metallic conductors?
- Decreases
- Increases
- Remains the same
π‘ Hint: Think about how hot metals behave.
Question 2
True or False: The resistivity of semiconductors typically decreases with increasing temperature.
- True
- False
π‘ Hint: Consider how heat affects electrons in semiconductors.
Solve and get performance evaluation
Challenge Problems
Push your limits with challenges.
Question 1
A heating element made of nichrome has a resistance of 100 Ξ© at 20 Β°C and a temperature coefficient of resistivity of 1.57 x 10^-5 Β°C^-1. Calculate its resistance at 200 Β°C.
π‘ Hint: Follow the formula while plugging in the values carefully.
Question 2
Explain why metals are generally used as conductors and their resistivity changes with temperature.
π‘ Hint: Think about the atomic structure and flow of electrons in metals.
Challenge and get performance evaluation