3.7 - RESISTIVITY OF VARIOUS MATERIALS
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Practice Questions
Test your understanding with targeted questions
What is the unit of resistivity?
💡 Hint: Think about the measurement that describes how much a material resists electrical flow.
Name a good example of a conductor.
💡 Hint: What metal is often used in electrical wiring?
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Interactive Quizzes
Quick quizzes to reinforce your learning
Which material type has the highest resistivity?
💡 Hint: Consider which materials restrict electrical flow the most.
True or False: The resistivity of semiconductors always increases with temperature.
💡 Hint: Think about how temperature affects movement within materials.
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Challenge Problems
Push your limits with advanced challenges
A material is classified as a semiconductor with a resistivity of 1.0 × 10^-3 Ωm at 20°C. What will be its resistivity at 100°C if the temperature coefficient is 0.003/°C?
💡 Hint: Plug-in values into the resistivity formula for temperature change.
A wire of length 2m and cross-sectional area 1 × 10^-6 m² has a resistance of 5 Ω. What is its resistivity?
💡 Hint: Use dimensional analysis to relate dimensions with resistance.
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