A student wants to compare the resistivity of two different materials using wires of identical length and cross-sectional area. Which measurement must be made for both wires to determine their resistivity?

Question

A student wants to compare the resistivity of two different materials using wires of identical length and cross-sectional area. Which measurement must be made for both wires to determine their resistivity? — Exam MCQ

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B. Measuring the resistance of each wire — The correct choice is Measuring the resistance of each wire. It follows from the basic electrical relationship between voltage, current, resistance, charge or electrical energy described in the question.

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A. Measuring the mass of each wire

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C. Measuring the brightness of a bulb in the circuit

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D. Measuring the voltage across each wire

A student wants to compare the resistivity of two different materials using wires of identical length and cross-sectional area. Which measurement must be made for both wires to determine their resistivity?

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