Physics for Scientists and Engineers: A Strategic Approach with Modern Physics (Chs 1-42) Plus Mastering Physics with Pearson eText -- Access Card Package (4th Edition)
4th Edition
ISBN: 9780133953145
Author: Randall D. Knight (Professor Emeritus)
Publisher: PEARSON
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Textbook Question
Chapter 28, Problem 26EAP
What is the equivalent resistance between points a and b in FIGURE EX28.26?
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Units are correct but my numerical answers are wrong. What am I doing wrong here?
Material with uniform resistivity p is formed into a wedge as
shown in Figure P26.50. Show that the resistance between
face A and face B of this wedge is
L
R= p
In
w(y2 – y,)
Face A
Face B
Figure P26.50
Four resistors are connected to a battery as shown in the
R,=2R
figure. The current through the battery is I, the battery's
electromotive force (emf) is E = 9.65 V, and the resistor
values are R = R, R2 =
2R, R3
4R, and R = 3R.
!!
R, = R
Find the voltages across each resistor.
R,= 3R
V =
V
V2 =
V
R, = 4R
V3 =
V
V4 =
V.
ww
Chapter 28 Solutions
Physics for Scientists and Engineers: A Strategic Approach with Modern Physics (Chs 1-42) Plus Mastering Physics with Pearson eText -- Access Card Package (4th Edition)
Ch. 28 - Rank in order, from largest to smallest, the...Ch. 28 - The tip of a flashlight bulb is touching the top...Ch. 28 - The wire is broken on the right side of the...Ch. 28 - The circuit of FIGURE Q28.4 has two resistors,...Ch. 28 - The circuit of FIGURE Q28.5 has two resistors,...Ch. 28 - Rank in order, from largest to smallest, the...Ch. 28 - Are the two resistors in FIGURE Q28.7 in series or...Ch. 28 - A battery with internal resistance r is connected...Ch. 28 - Initially bulbs A and B in FIGURE Q28.9 are...Ch. 28 - Bulbs A. B, and C in FIGURE Q28.1O axe identical,...
Ch. 28 - Bulbs A and B in FIGURE Q28.11 are identical, and...Ch. 28 - Prob. 12CQCh. 28 - FIGURE Q28.13 shows the voltage as a function of...Ch. 28 - Prob. 1EAPCh. 28 - Draw a circuit diagram for the circuit of FIGURE...Ch. 28 - Prob. 3EAPCh. 28 - Prob. 4EAPCh. 28 - a. What are the magnitude and direction of the...Ch. 28 - What is the magnitude of the potential difference...Ch. 28 - Prob. 7EAPCh. 28 - Prob. 8EAPCh. 28 - A 60 W lightbulb and a 100 W lightbulb are placed...Ch. 28 - Prob. 10EAPCh. 28 - The five identical bulbs in FIGURE EX2B.11 are all...Ch. 28 - Prob. 12EAPCh. 28 - Prob. 13EAPCh. 28 - A typical American family uses kWh of electricity...Ch. 28 - A waterbed heater uses 450 W of power. It is on 25...Ch. 28 - Prob. 16EAPCh. 28 - Prob. 17EAPCh. 28 - Prob. 18EAPCh. 28 - 19. The voltage across the terminals of a V...Ch. 28 - Prob. 20EAPCh. 28 - Prob. 21EAPCh. 28 - 22. Two of the three resistors in FIGURE EX28.22...Ch. 28 - What is the value of resistor R in FIGURE EX28.23?Ch. 28 - Prob. 24EAPCh. 28 - What is the equivalent resistance between points a...Ch. 28 - What is the equivalent resistance between points a...Ch. 28 - Prob. 27EAPCh. 28 - Prob. 28EAPCh. 28 - Prob. 29EAPCh. 28 - Prob. 30EAPCh. 28 - Prob. 31EAPCh. 28 - Prob. 32EAPCh. 28 - Prob. 33EAPCh. 28 - What is the time constant for the discharge of the...Ch. 28 - A 10F capacitor initially charged to 20C is...Ch. 28 - Prob. 36EAPCh. 28 - Prob. 37EAPCh. 28 - A capacitor is discharged through a resistor. The...Ch. 28 - Prob. 39EAPCh. 28 - 40. A refrigerator has a 1000 W compressor, but...Ch. 28 - Prob. 41EAPCh. 28 - An electric eel develops a potential difference...Ch. 28 - You have a resistor, a resistor, a resistor, and a...Ch. 28 - A 2.0 -m-long, 1.0 -mm-diameter wire has a...Ch. 28 - What is the equivalent resistance between points a...Ch. 28 - What are the emf and internal resistance of the...Ch. 28 - A string of holiday lights can be wired in series,...Ch. 28 - The circuit shown in FIGURE P28.48 is inside a 15...Ch. 28 - Suppose you have resistors 2.5,3.5, and 4.5 and a...Ch. 28 - A lightbulb is in series with a resistor. The...Ch. 28 - Prob. 51EAPCh. 28 - Prob. 52EAPCh. 28 - Prob. 53EAPCh. 28 - Prob. 54EAPCh. 28 - What are the battery current Ibatand the potential...Ch. 28 - A battery is a voltage source, always providing...Ch. 28 - A circuit you’re building needs an ammeter that...Ch. 28 - For the circuit shown in FIGURE P28.58, find the...Ch. 28 - For the circuit shown in FIGURE P28.59, find the...Ch. 28 - For the circuit shown in FIGURE P28.60, find the...Ch. 28 - What is the current through the 20 resistor in...Ch. 28 - For the circuit shown in FIGURE P28.62, find the...Ch. 28 - What is the current through the 10 resistor in...Ch. 28 - For what emf does the 200 resistor in FIGURE...Ch. 28 - Prob. 65EAPCh. 28 - Prob. 66EAPCh. 28 - Prob. 67EAPCh. 28 - II A circuit you're using discharges a 20F...Ch. 28 - A 150F defibrillator capacitor is charged to 1500V...Ch. 28 - Prob. 70EAPCh. 28 - A 0.25F capacitor is charged to 50 V. It is then...Ch. 28 - Prob. 72EAPCh. 28 - Prob. 73EAPCh. 28 - The capacitors in FIGURE P28.74 are charged and...Ch. 28 - Prob. 75EAPCh. 28 - Prob. 76EAPCh. 28 - Prob. 77EAPCh. 28 - Prob. 78EAPCh. 28 - Prob. 79EAPCh. 28 - Prob. 80EAPCh. 28 - Prob. 81EAPCh. 28 - Prob. 82EAP
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- Four resistors are connected to a battery as shown in the R, = 2R figure. The current through the battery is I, the battery's electromotive force (emf) is E = 10.30 V, and the resistor values are R = R, R2 = 2R, R3 = 4R, and R4 = 3R. R, = R Find the voltages across each resistor. R, = 3R V = V V2 = V R, = 4R V3 = V V4 = V ww wwarrow_forwardA Figure P29.35 shows a combination of six resistors with identical resistance R. What is the equivalent resistance between points a and b?arrow_forwardThe resistance between terminals a and b in Figure P27.36 is 75.0 . If the resistors labeled R have the same value, determine R. Figure P27.36arrow_forward
- Figure P29.45 shows five resistors connected between terminals a and b. a. What is the equivalent resistance of this combination of resistors? b. What is the current through each resistor if a 24.0-V battery is connected across the terminals?arrow_forwardFour resistors are connected to a battery as shown in Figure P27.15. (a) Determine the potential difference across each resistor in terms of . (b) Determine the current in each resistor in terms of I. (c) What If? If R3 is increased, explain what happens to the current in each of the resistors. (d) In the limit that R3 , what are the new values of the current in each resistor in terms of I, the original current in the battery? Figure P27.15arrow_forwardIn the circuit of Figure P27.20, the current I1 = 3.00 A and the values of for the ideal battery and R are unknown. What are the currents (a) I2 and (b) I3? (c) Can you find the values of and R? If so, find their values. If not, explain. Figure P27.20arrow_forward
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- can u help me? tnxarrow_forwardFour resistors are connected to a battery as shown in the figure. The current through the battery is I, the battery's electromotive force (emf) is & = 4.85 V, and the resistor values are R₁ = R, R₂ = 2R, R3 = 4R, and R4 = 3R. Find the voltages across each resistor. V₁ = V₂ = V3 = V4= TOOLS y x10 V V V V R₁ = R www R₂= = 2R R₁=3R ww R₂ = 4Rarrow_forwardLet us consider the following circuit where two batteries 1=2l V with internal resistance 1=0.3 2 and = 12 v with = 0.20 %3D are connected to two resistors R, = 1.50 and R2 with the current = 2 A R2 What is the value of the resistance R2 ? Select one: O a. none of these O b. 52 O c. 10 2 O d. 750 O e 2.5 2 Three batteries of = 15 V with intemal resistancer = 12/ and -12 are connected to two resistors = 20 and R, = 20 The 12:30 PM 5/13/2021arrow_forward
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