Physics (AS & A Level) · May / June 2024 · Paper 13 · Question 33
9702Resistance and resistivity
The resistance of a metal cube is measured by placing it between two parallel plates, as shown. The cube has volume V and is made of a material with resistivity ρ. The connections to the cube have negligible resistance. Which expression gives the electrical resistance of the metal cube between X and Y?
- AρV^{1/3}
- BρV^{2/3}
- Cρ / V^{1/3}
- Dρ / V^{2/3}
As printed in the paper
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Correct answer: C. ρ / V^{1/3}
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