You are given a wire of length I and cross-section area A. You put a potential difference of V across it and measure the current I that runs through it. You then cut the wire in ha lengthwise and solder the ends together, constructing a wire with twice the length as the original. You again put a potential difference V across the wire. In terms of the original quantities, 1. What is the resistance of the new wire? 2. What is the current through the new wire? 3. What is the current density through the new wire? 4. What is the electric field through the new wire?

You are given a wire of length I and cross-section area A. You put a potential difference of V across it and measure the current I that runs through it. You then cut the wire in ha lengthwise and solder the ends together, constructing a wire with twice the length as the original. You again put a potential difference V across the wire. In terms of the original quantities, 1. What is the resistance of the new wire? 2. What is the current through the new wire? 3. What is the current density through the new wire? 4. What is the electric field through the new wire?

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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