Exam-style question
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What is the definition of resistivity in materials?.
- A.The resistance of a material per unit length and cross-sectional area
- B.The ability of a material to conduct electricity without resistance
- C.The total resistance of a circuit divided by the number of components
- D.The ratio of voltage to current in a conductor
Model answer
What a good answer should say
- The resistance of a material per unit length and cross-sectional area
Explanation
Why this works
Resistivity is defined as the resistance of a material per unit length and cross-sectional area, which quantifies how strongly a material opposes the flow of electric current.
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