A-level Physics (Advancing Physics)/Resistivity and Conductivity
1. A material has a conductivity of 10 6 S m −1. What is its resistivity? 2. A pure copper wire has a radius of 0.5mm, a resistance of 1 MΩ, and is 4680 km long. What is the resistivity of copper? 3. Gold has a conductivity of 45 MS m −1. What is the resistance of a 0.01m across gold connector, 0.05m long? 4.
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