Wire C and wire D are made from different materials and have length Lc=Lp=2.4 m. The resistivity and diameter of wire Care 4.2 x 10-6 2-m and 1.32 mm, and those of wire D are 1.8 x 106 Q-m and 0.78 mm. The wires are joined as shown in the figure and a current of 2.7 A is set up in them. What is the electric potential difference between (a) points 1 and 2 and (b) points 2 and 3? What is the rate at which energy is dissipated between (c) points 1 and 2 and (d) points 2 and 3? (a) Number (b) Number i (c) Number i (d) Number i Units Units Units Units 2 D ·LD 3

Wire C and wire D are made from different materials and have length Lc=Lp=2.4 m. The resistivity and diameter of wire Care 4.2 x 10-6 2-m and 1.32 mm, and those of wire D are 1.8 x 106 Q-m and 0.78 mm. The wires are joined as shown in the figure and a current of 2.7 A is set up in them. What is the electric potential difference between (a) points 1 and 2 and (b) points 2 and 3? What is the rate at which energy is dissipated between (c) points 1 and 2 and (d) points 2 and 3? (a) Number (b) Number i (c) Number i (d) Number i Units Units Units Units 2 D ·LD 3

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

Microscopic view of current

In physics, the term current is expressed as the rate of flow of electric charges across the area per unit time (I=q/t). It propagates along in the direction of the motion of positive charges. When the current is caused by the motion of electrons, the direction of the current is opposite to the flow.

Question

Wire C and wire D are made from different materials and have length Lc = Lp = 2.4 m. The resistivity and diameter of wire Care 4.2 x
10-6 2-m and 1.32 mm, and those of wire D are 1.8 x 10-6 0-m and 0.78 mm. The wires are joined as shown in the figure and a current
of 2.7 A is set up in them. What is the electric potential difference between (a) points 1 and 2 and (b) points 2 and 3? What is the rate at
which energy is dissipated between (c) points 1 and 2 and
points 2 and 3?
(a) Number i
(b) Number i
(c) Number i
(d) Number i
1
Units
Units
Units
Units
с
2
D
L₁

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