Tutorial ExerciseConsider the following figure.7.00 N4.00 N9.00 NRab(a) Find the equivalent resistance between points a and b in the figure. (R = 15.5 2)(b) Calculate the current in each resistor if a potential difference of 27.0 V is applied between points a and b.Step 1(a) The 7.00-2 and the R = 15.5 N resistors between points c and d in the figure above are connected in parallel with each other. Thus we can redraw thefigure, as shown in the diagram below where Rcd is the equivalent resistance between points c and d in the original figure. 4.00 2Red9.00 2For the equivalent resistance, we have1Rcd =4.824.82 2.7.00 215.515.5 QThis resistance is in series with the 4.00-N and the 9.00-2 resistors as shown in the diagram in this step. Let R, represent the 4.00-2 resistance and R. the9.00-2 resistance. The total resistance Rh between points a and b is thenPab = R4 + Rcd + R.= 4.00 2 + 4.844.82| Ω + 9.00 Ω-17.849|17.8 2.Step 2(b) If the potential difference between points a and b is AVah = 27.0 V, then the current Ih between points a and b isΔν.Iab =ababA.

Answered: Image /qna-images/answer/aee71300-cac7-403f-993b-e4b4c923113c.jpg

Consider the following figure. 7.00 N 4.00 N 9.00 N R a b. (a) Find the equivalent resistance between points a and b in the figure. (R = 15.5 N) (b) Calculate the current in each resistor if a potential difference of 27.0 V is applied between points a and b.

Consider the following figure. 7.00 N 4.00 N 9.00 N R a b. (a) Find the equivalent resistance between points a and b in the figure. (R = 15.5 N) (b) Calculate the current in each resistor if a potential difference of 27.0 V is applied between points a and b.

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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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

Tutorial Exercise
Consider the following figure.
7.00 N
4.00 N
9.00 N
R
a
b
(a) Find the equivalent resistance between points a and b in the figure. (R = 15.5 2)
(b) Calculate the current in each resistor if a potential difference of 27.0 V is applied between points a and b.
Step 1
(a) The 7.00-2 and the R = 15.5 N resistors between points c and d in the figure above are connected in parallel with each other. Thus we can redraw the
figure, as shown in the diagram below where Rcd is the equivalent resistance between points c and d in the original figure.

4.00 2
Red
9.00 2
For the equivalent resistance, we have
1
Rcd =
4.82
4.82 2.
7.00 2
15.5
15.5 Q
This resistance is in series with the 4.00-N and the 9.00-2 resistors as shown in the diagram in this step. Let R, represent the 4.00-2 resistance and R. the
9.00-2 resistance. The total resistance Rh between points a and b is then
Pab = R4 + Rcd + R.
= 4.00 2 + 4.84
4.82| Ω + 9.00 Ω-17.849|
17.8 2.
Step 2
(b) If the potential difference between points a and b is AVah = 27.0 V, then the current Ih between points a and b is
Δν.
Iab =
ab
ab
A.

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