8.8 - Resistivity (Specific Resistance)
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Practice Questions
Test your understanding with targeted questions
What is the unit of resistivity?
💡 Hint: Think about how resistance is measured.
What does low resistivity indicate about a material?
💡 Hint: Consider the flow of electric current.
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Interactive Quizzes
Quick quizzes to reinforce your learning
What is the formula for resistance in terms of resistivity?
💡 Hint: Recall the dimensions of the wire.
True or False: Resistivity depends on the dimensions of the conductor.
💡 Hint: Consider what factors resistivity is determined by.
1 more question available
Challenge Problems
Push your limits with advanced challenges
A cylindrical wire made of material X has a resistivity of 2.5 × 10^-8 Ω·m, with a length of 3 m and a diameter of 2 mm. Calculate its resistance.
💡 Hint: Convert the diameter to radius for area calculation.
Discuss the implications of using a material with high resistivity in home wiring solutions.
💡 Hint: Think about the effects on electricity bills and safety.
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