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Tutorials in Introductory Physics
1st Edition
ISBN: 9780130970695
Author: Peter S. Shaffer, Lillian C. McDermott
Publisher: Addison Wesley
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Textbook Question
Chapter 6.1, Problem 3cT
Formulate a rule for predicting how the current through (he battery would change (i.e., whether it would increase, decrease, or remain” the same) if the number of bulbs connected in parallel were increased or decreased. Base your answer on your observation of the behavior of the two-bulb parallel circuit and the model for current.
What can you infer about the total resistance of a circuit as the number of parallel branches is increased or decreased?
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Students have asked these similar questions
In the circuit below, calculate (a) the equivalent resistance and (b) the total current in the circuit with
the following resistance values: R₁ = 40 , R₂ = 30 , R3 = 20 , & R4 = 10 . The voltage across the
battery is 12.0 V.
V
Write your answer/s here
(with correct units)
HO
Show your complete solution here (use Equation Editor):
R₁
R₁
R3
R₂
I have attached the formulas and values tahat we use for reference. Please include a detailed solution. Thank you!
Question:When two resistors A and B are connected in series, the total resistance is 36 ohms. When connected in parallel, the total resistance is 8 ohms. What is the ratio of the resistance RA to resistance RB? Assume RA < RB and express the answer in decimal form.
Find the expression for the equivalent resistance of 3 resistors (R1.R2.R3) connected in parallel.
Sol.
In a parallel connection, voltage drops across the resistors so:
Using, Ohm's Law
V=1
we derive, that
2 = V2/
I3=V3/
Since, the voltage is the same on all resistors, then
V= V =
Substituting to the, first equation above, we get the following
|= V1/
+ V2/
+ V3/
So:
1
1
1
+
+
R2
1.
Rea
R1
R3
Chapter 6 Solutions
Tutorials in Introductory Physics
Ch. 6.1 - Obtain a battery, a light bulb, and a single piece...Ch. 6.1 - A student has briefly connected a wire across the...Ch. 6.1 - Light a bulb using a battery and a single wire....Ch. 6.1 - Carefully examine a bulb. Two wires extend from...Ch. 6.1 - Compare the brightness of the two bulb with each...Ch. 6.1 - Compare the brightness of each of the bulbs in the...Ch. 6.1 - We may think of a bulb as percentage an obstacle,...Ch. 6.1 - Compare the brightness of the bulbs in this...Ch. 6.1 - Is the brightness of each bulb in the two-bulb...Ch. 6.1 - Formulate a rule for predicting how the current...
Ch. 6.1 - Does the amount of current through a battery seem...Ch. 6.1 - Unscrew one of the bulbs in the two-bulb parallel...Ch. 6.1 - The circuit at tight contains three identical...Ch. 6.1 - Show that a simple application of the model for...Ch. 6.2 - The circuits at right contain identical batteries,...Ch. 6.2 - The circuits at right contain identical batteries...Ch. 6.2 - Predict the relative brightness of bulbs...Ch. 6.2 - Set up the circuit with a single bulb and the...Ch. 6.2 - Set up the circuit containing two bulbs in series...Ch. 6.2 - Predict what the voltmeter would read if it were...Ch. 6.2 - Set up the circuit with two bulbs in parallel as...Ch. 6.2 - Answer the following questions based on the...Ch. 6.2 - Set up the circuit with three bulbs as shown and...Ch. 6.2 - Before setting up the circuit shown at right:...Ch. 6.2 - Both circuits al right have more than one path for...Ch. 6.3 - A capacitor is connected to a battery, bulb, and...Ch. 6.3 - Remove the capacitor and the bulb from the...Ch. 6.3 - Suppose an uncharged capacitor is connected in...Ch. 6.3 - Suppose that instead of connecting the uncharged...Ch. 6.3 - Suppose that the bulbs were connected in parallel...Ch. 6.3 - After completing the experiments above, two...Ch. 6.3 - Suppose that a different capacitor of smaller...Ch. 6.3 - Before connecting the circuit a student makes the...Ch. 6.3 - Make the following prediction on the basis of your...
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