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 20.2, Problem 3aTH
Consider the circuit as shown.
i. Rank bulbs A, B, and C in order of brightness. Explain how you determined your answer.
ii. Rank the voltages across the bulbs. Explain.
iii. Write an equation that relates the voltage across bulbs A and B to the battery voltage.
iv. Is the voltage across bulb Agreater than, less than, or equal to one half the battery voltage? Explain your reasoning.
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Students have asked these similar questions
Two 60.0 Ω resistors are connected in parallel and this parallel arrangement is
then connected in series with a 30.0 Ω resistor. The combination is placed
across a 120. V potential difference.
1.Draw a schematic diagram of the circuit using correct symbols.
2.What is the equivalent resistance of the parallel portion of the circuit?
3.What is the equivalent resistance for the entire circuit?
4.What is the total current in the circuit?
5.What is the voltage drop across the 30.0 Ω resistor?
6.What is the voltage drop across the parallel portion of the circuit?
7.What is the current through each resistor?s
m
2R
R
3. The new symbol you see in the diagram at the left is a multicell battery (like a 9V), which is
made up of a number of smaller single cell batteries (like a 1.5V). Let's say its total voltage is V.
A. Which resistor takes the most voltage?
B.
What is the total resistance?
C.
In variables, what is the current in the circuit?
D.
How does the voltage used by the 2R compare with R?
E. In variables, what is the voltage used by the 2R resistor?
A. The circuit at right is made from an ideal battery connected to 5 identical light bulbs as shown.
i.
Rank the brightness of the bulbs from brightest to
dimmest. If any are equal or not lit, state so explicitly.
Explain your reasoning.
E
F
iii.
A sixth bulb, bulb F, is added to the circuit as shown.
Will the current through the battery increase, decrease, or
stay the same? Explain.
B
E
iv.
With the addition of bulb F does the brightness of bulb E increase, decrease, or stay the
same? Explain.
V.
With the addition of bulb F does the brightness of bulb B increase, decrease, or stay the
same? Explain.
Chapter 20 Solutions
Tutorials in Introductory Physics
Ch. 20.1 - In tutorial, you compared the relative brightness...Ch. 20.1 - Use the model for electric current to rank the...Ch. 20.1 - Rang the brightness of the bulbs. Explain your...Ch. 20.1 - A wire is now added to the circuit as shown. i....Ch. 20.1 - Rank the networks according to their equivalent...Ch. 20.1 - How does adding a single bulb to a circuit in...Ch. 20.1 - How does adding a single bulb to a circuit in...Ch. 20.1 - The network AE above are connected, in turn, to...Ch. 20.1 - Rank the bulbs in order from brightest to dimmest....Ch. 20.1 - Suppose that a switch has been added to the...
Ch. 20.2 - The circuit at right consists of a bulb in series...Ch. 20.2 - The circuit at right consists of a bulb in series...Ch. 20.2 - The circuit at right consists of a bulb in series...Ch. 20.2 - In the circuit at right, the voltage across bulb 1...Ch. 20.2 - Prob. 2bTHCh. 20.2 - Box A and box B are now interchanged. It is...Ch. 20.2 - Consider the circuit as shown. i. Rank bulbs A, B,...Ch. 20.2 - b. A student cuts the write between bulbs A and C...Ch. 20.2 - Consider the following discussion between two...Ch. 20.2 - Rank bulbs 16 in order or brightness. Explain your...Ch. 20.2 - Rank the voltages across the bulbs. Explain your...Ch. 20.2 - Write an equation that relates the voltage across...Ch. 20.2 - Bulb 1 is removed from its socket. i. Does the...Ch. 20.3 - Describe the behavior of the bulb in the two...Ch. 20.3 - A second identical bulb is flow added to the...Ch. 20.3 - Just after the switch is closed: • what is the...Ch. 20.3 - A long time after the switch is closed: • rank the...Ch. 20.3 - Summarize your results by describing the behavior...
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