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Practice Questions
Test your understanding with targeted questions related to the topic.
Question 1
Easy
What is the unit of resistivity?
π‘ Hint: Think about how resistance is measured.
Question 2
Easy
What does low resistivity indicate about a material?
π‘ Hint: Consider the flow of electric current.
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 formula for resistance in terms of resistivity?
- R = Ο / (l * A)
- R = Ο * (l / A)
- R = l / A
π‘ Hint: Recall the dimensions of the wire.
Question 2
True or False: Resistivity depends on the dimensions of the conductor.
- True
- False
π‘ Hint: Consider what factors resistivity is determined by.
Solve 1 more question and get performance evaluation
Challenge Problems
Push your limits with challenges.
Question 1
A cylindrical wire made of material X has a resistivity of 2.5 à 10^-8 Ω·m, with a length of 3 m and a diameter of 2 mm. Calculate its resistance.
π‘ Hint: Convert the diameter to radius for area calculation.
Question 2
Discuss the implications of using a material with high resistivity in home wiring solutions.
π‘ Hint: Think about the effects on electricity bills and safety.
Challenge and get performance evaluation