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7. Consider two (1 and 2) silver wires both of which have constant circular cross sec- tional areas ; we are given the data: ; diameter = d Wire 2: length = 2L ; diameter = d/2 ; resistance = R, Wire 1: length = L resistance = R, %3D A potential difference ( V,) applied across wire 1 results in power dissipation of (P,) and a potential difference ( V,) applied across wire 2 results in power dissipation of (P,). If P, = P, then which answer choice gives a correct set of comparisons? a. R, > R, ; V,> V, b. R, > R, ; V, < V, c. R, = R, ; V, = V, d. R2 V, e. R2

7. Consider two (1 and 2) silver wires both of which have constant circular cross sec- tional areas ; we are given the data: ; diameter = d Wire 2: length = 2L ; diameter = d/2 ; resistance = R, Wire 1: length = L resistance = R, %3D A potential difference ( V,) applied across wire 1 results in power dissipation of (P,) and a potential difference ( V,) applied across wire 2 results in power dissipation of (P,). If P, = P, then which answer choice gives a correct set of comparisons? a. R, > R, ; V,> V, b. R, > R, ; V, < V, c. R, = R, ; V, = V, d. R2 V, e. R2

College Physics
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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7. Consider two (1 and 2) silver wires both of which have constant circular cross sec- tional areas ; we are given the data: ; diameter = d Wire 2: length = 2L ; diameter = d/2 ; resistance = R, Wire 1: length = L resistance = R, %3D A potential difference ( V,) applied across wire 1 results in power dissipation of (P,) and a potential difference ( V,) applied across wire 2 results in power dissipation of (P,). If P, = P, then which answer choice gives a correct set of comparisons? a. R, > R, ; V,> V, b. R, > R, ; V, < V, c. R, = R, ; V, = V, d. R2 <R, ; V,> V, e. R2 <R, ; V, <V;
Transcribed Image Text:7. Consider two (1 and 2) silver wires both of which have constant circular cross sec- tional areas ; we are given the data: ; diameter = d Wire 2: length = 2L ; diameter = d/2 ; resistance = R, Wire 1: length = L resistance = R, %3D A potential difference ( V,) applied across wire 1 results in power dissipation of (P,) and a potential difference ( V,) applied across wire 2 results in power dissipation of (P,). If P, = P, then which answer choice gives a correct set of comparisons? a. R, > R, ; V,> V, b. R, > R, ; V, < V, c. R, = R, ; V, = V, d. R2 <R, ; V,> V, e. R2 <R, ; V, <V;
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