Wires A and B are identical (same length and radius) except that each is made from a different material. The resistivity of wire A is larger than the resistivity of B. One end of wire A is connected to one end of wire B. The two remaining free ends are connected across a battery (so the wires and battery form one continuous loop) and current flows through the two wires. Is the potential difference across the two wires is the same, or is it different? If different, which potential is larger? How about the current through each wire? Are they the same or different, and if different, which current is larger? Please explain your answers. 22

Wires A and B are identical (same length and radius) except that each is made from a different material. The resistivity of wire A is larger than the resistivity of B. One end of wire A is connected to one end of wire B. The two remaining free ends are connected across a battery (so the wires and battery form one continuous loop) and current flows through the two wires. Is the potential difference across the two wires is the same, or is it different? If different, which potential is larger? How about the current through each wire? Are they the same or different, and if different, which current is larger? Please explain your answers. 22

College Physics

11th Edition

ISBN:9781305952300

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter1: Units, Trigonometry. And Vectors

Section: Chapter Questions

Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...

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Concept explainers

Resistivity

Resistivity is a characteristic property of the conductor’s material that measures the extent to which the material opposes the flow of current. It is denoted by the Greek letter “rho”. Electrical resistivity, also known as specific resistance, depends on the nature of the material of the conductor and is unaffected by its dimensions.

Question

Wires A and B are identical (same length and radius) except that each is made from a different
material. The resistivity of wire A is larger than the resistivity of B. One end of wire A is connected
to one end of wire B. The two remaining free ends are connected across a battery (so the wires and
battery form one continuous loop) and current flows through the two wires.
Is the potential difference across the two wires is the same, or is it different? If different, which
potential is larger?
How about the current through each wire? Are they the same or different, and if different, which
current is larger?
Please explain your answers.

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