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 4aT
The circuit at tight contains three identical bulbs and an ideal battery. Assume that the resistance of the switch, when closed, is negligible. Use the model we have developed to:
• predict the relative brightness of the bulbs in the circuit with the switch closed. Explain.
• predict how the brightness of bulb A changes when the switch is opened. Explain.
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Part A
Determine the equivalent resistance of the ladder" of equal 140-S2 resistors shown in the figure. In other words, what resistance would an ohmmeter read if connected between points A and B? (Figure 1)
Express your answer with the appropriate units.
R
Value
Units
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• Part B
What is the current through resistor a if a 65.0-V battery is connected between points A and B?
Express your answer with the appropriate units.
igure
1 of 1 >
Value
Units
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• Part C
What is the curent through resistor b?
Express your answer with the appropriate units.
Is
Value
Units
then
watt/volt = coulomb/second
= ampere.
A 1500-W heater is designed to be plugged into a
120-V outlet.
Part B
What is R, the resistance of the heater?
Express your answer numerically in ohm using three significant figures.
• View Available Hint(s)
R =
Ω
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Show all work for this question on your paper and PDF upload. There is nothing to submit in this question section for this
problem.
Two resistors, 25 Q, 37.5 0, and in parallel. That combination is in series with an unknown
resistor R. This parallel-series combination is connected to a 12 V battery. The total current
flowing through the battery is 0.60 A.
a) Draw the circuit diagram for this arrangement.
• Include a voltmeter showing the measurement of the unknown resistor R.
• Include an ammeter to show the current through the 25 Q resistor.
b) Determine the value of resistance R.
c) Determine the current through the unknown resistor.
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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