Tutorials in Introductory Physics
1st Edition
ISBN: 9780130970695
Author: Peter S. Shaffer, Lillian C. McDermott
Publisher: Addison Wesley
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Chapter 6.1, Problem 2aT
Compare the brightness of the two bulb with each other. (Pay attention to large differences in brightness. You may notice minor differences if two “identical" bulbs are, in fact, not quite identical.)
Use the assumptions we have made in developing our model for
1. Is current “used up” in the first bulb, or is the current the same trough both bulb?
2. Do you think that switching the order of the bulbs might make a difference? Check your answer.
3. On the basis of your observations alone, can you tell the direction of the flow through the circuit?
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1. In Module 4, we learned the concept of electric current and resistance. Most circuits have
more than one resistor, often connected in series, parallel, or combination of series and
parallel.
(a) Imagine a circuit with two identical bulbs connected one after the other (in series) as
shown. Discuss how the brightness of the two bulbs will compare to the brightness of
an identical bulh in a single-bulb circuit. Explain your
reasoning.
(b) Now consider the circuit pictured to the right with the circuit branching to two bulbs
and back again. (Two bulbs connected in this way are said to be in parallel.) Discuss
how the brightness of the two bulbs will compare to the brightness of an identical
bulb in a single-bulb circuit. Explain your reasoning.
Both circuits have a 12V battery and three 3-ohm resistors, but they are connected very differently. The series circuit on the left shows the three resistors in series. The parallel circuit on the right shows the three resistors in parallel. Select all the statements below that are true. Select 3:
27.3 new circuit.JPG
Group of answer choices
In the left series circuit, the equivalent resistance is 1 ohm.
In the right parallel circuit, voltage across each resistor is the same.
Both circuits dissipate the same amount of power.
In the right parallel circuit, the equivalent resistance is 9 ohm.
In the left series circuit, current is the same through all resistors.
In the right parallel circuit, the equivalent resistance is 1 ohm.
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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