Tutorials in Introductory Physics
1st Edition
ISBN: 9780130970695
Author: Peter S. Shaffer, Lillian C. McDermott
Publisher: Addison Wesley
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Chapter 14.2, Problem 1cT
To determine
To Plot: I-V graph.
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The voltage V (volts), current I (amperes), and resistance R (ohms) of an electric circuit like the one shown here are related by the equation V=IR. Suppose that V is
1
increasing at the rate of 3 volt/sec while I is decreasing at the rate of amp/sec. Let t denote time in seconds. Answer the following questions.
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dl
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b. What is the value of dt?
volt/sec (Simplify your answer.)
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amp/sec (Simplify your answer.)
c. What equation relates to
dR
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dt
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and dt?
OB.
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d. Find the rate at which R is changing when V = 40 volts and 1= 4 amp. Is R increasing or decreasing?
R is changing at ohm/sec. (Simplify your answer.)
Is R increasing or decreasing?
dR
dt
dR
dt
=
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Directions: Solve the given problems. Show your complete solutions.Round off your answers into the proper number of significant figures.1. A silver wire 2.5 mm in diameter transfers a charge of 370 C in 70 minutes.Silver is made up of 5.8 x 1028 free electrons per cubic meter.a. Find the current in the wire.b. What is the magnitude of the drift velocity of the electrons in the wire?
A circuit contains a source of constant voltage V and two
resistors connected in parallel, as shown in (Figure 1).
Resistor 1 has resistance R1, and resistor 2 has
resistance R2.
Part C
Now consider three resistors in parallel, with resistances R1, R2, and R3, as shown in (Figure 3). Again,
draw a circuit diagram with a single equivalent resistor, with resistance R. What is the value of R?
Figure
1 of 3
Express your answer in terms of R1, R2, and R3.
V ΑΣΦ
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V
R1
R2
R =
Chapter 14 Solutions
Tutorials in Introductory Physics
Ch. 14.1 - In the magnified view of the slits, an arrow is...Ch. 14.1 - For what values of the path length difference...Ch. 14.1 - Suppose that a single change were made to the...Ch. 14.1 - Prob. 2aTCh. 14.1 - Prob. 2bTCh. 14.1 - Prob. 2cTCh. 14.1 - Use trigonometry to show that the path length...Ch. 14.1 - Prob. 3bTCh. 14.2 - How does the voltmeter reading compare to the...Ch. 14.2 - Prob. 1bT
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