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3 cards from this section. Quick, good the night before a test.
What is the unit of resistivity?
Think about the measurement that describes how much a material resists electrical flow.
Name a good example of a conductor.
What metal is often used in electrical wiring?
Which material type has the highest resistivity?
Consider which materials restrict electrical flow the most.
True or False: The resistivity of semiconductors always increases with temperature.
Think about how temperature affects movement within materials.
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?
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?
Use dimensional analysis to relate dimensions with resistance.
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