2.4 - Resistivity and Conductivity
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Practice Questions
Test your understanding with targeted questions
Define resistivity.
💡 Hint: Think about how materials vary in their ability to conduct electricity.
What is the formula for conductivity?
💡 Hint: Remember the relationship between these two concepts.
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Interactive Quizzes
Quick quizzes to reinforce your learning
What is the unit of resistivity?
💡 Hint: Consider the dimensions used in resistance.
True or False: A material with high resistivity can easily conduct electricity.
💡 Hint: Think about how we classify conductors vs insulators.
1 more question available
Challenge Problems
Push your limits with advanced challenges
If a conductor has a resistivity of 5.2 × 10⁻⁸ Ω·m and is 2 mm in diameter, what would be its resistance over a length of 50 m?
💡 Hint: Remember to find the area of the circle for the wire's cross-section.
A semiconductor at 25°C has a resistivity of 50 Ω·m. If the temperature increases to 75°C and the resistivity drops by 20%, what is the new resistivity?
💡 Hint: Calculate the new value based on the percentage change.
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