5. Where in the circuit of Fig. 18–33is the current the largest, (a), (b),(c), or (d)? Or (e) it is the sameat all points?(c)|(b)FIGURE 18-33+ 1.5 V(a)MisConceptual Question 5.(d)

Answered: 5. Where in the circuit of Fig. 18–33…

University Physics Volume 2

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Chapter10: Direct-current Circuits

Section: Chapter Questions

Problem 10.1CYU: Check Your Understanding If you place a wire directly across the two terminal of a battery,...

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(II) A rectangular solid made of carbon has sides of lengths 1.0 cm, 2.0 cm, and 4.0 cm, lying along the x, y, and z axes, respectively (Fig. 18–35). Determine the resistance for current that passes through the solid in (a) the x direc- tion, (b) the y direction, and (c) the z direction. Assume the resistivity is p = 3.0 × 10-$ :m. 2.0 cm FIGURE 18–35 1.0 cm Problem 19. 4.0 cm
(III) When the resistor R in Fig. 19-73 is 35 N, the high- resistance voltmeter reads 9.7 V. When R is replaced by a 14.0-N resistor, the voltmeter reading drops to 8.1 V. What are the emf and V internal resistance of the battery? ww R FIGURE 19–73 Problem 66.
- (III) (a) A network of five equal resistors R is connected to a battery & as shown in Fig. 19–60. Determine the current I that flows out of the R battery. (b) Use the value determined for I to find the wwww W R ww single resistor Req that is equivalent R R to the five-resistor R network. FIGURE 19-60 Problem 33.
(I) Calculate the current in the circuit of Fig. 19–53, and show that the sum of all the r= 2.0 2 voltage changes around the circuit is zero. 9.0 V 9.5 Q FIGURE 19–53 Problem 25. 14.0 2
(II) A 100-W lightbulb has a resistance of about 12 Q when cold (20°C) and 140 N when on (hot). Estimate the tem- perature of the filament when hot assuming an average temperature coefficient of resistivity a = 0.0045 (C°)-1.
1. In which circuits shown in Fig. 19–40 are resistors connected in series? (a) (b) w ww (c) (d) FIGURE 19-40 MisConceptual Question 1.
(b) the potent nals a and b; 3 Find the current at point a in Fig. 20-45. duced in the 5 being produce the battery's c 5 A Fig. 20-45 ww ww
(II) Calculate the ratio of the resistance of 10.0 m of aluminum wire 2.2 mm in diameter, to 24.0 m of copper wire 1.8 mm in diameter.
Design a circuit in which two different switches of the type shown in Fig. 19–39 can be used to operate the same lightbulb from opposite sides of a Wire Wire room. FIGURE 19-39 Wire Question 17.
(II) For the circuit shown in Fig. 19–55, find the potential difference between points a and b. Each resistor has R R = 160 N and each bat- tery is 1.5 V. a 1.5 V• R: R R 1.5 V FIGURE 19-55 Problem 27. b
(II) What is the net resistance of the circuit connected to the battery in Fig. 19–50? R R C ww B ww R V R FIGURE 19-50 R A Problems 19 and 20. ww
A three-way lightbulb can produce 50 W, 100 W, or 150 W, at 120 V. Such a bulb contains two filaments that can be connected to the 120 V individually or in parallel (Fig. 19–74). (a) Describe how the connections to the two filaments are made to give each of the three wattages. (b) What must be the resistance of each filament? FIGURE 19–74 Problem 68.

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University Physics Volume 2

Physics

ISBN:

9781938168161

Author:

OpenStax

Publisher:

OpenStax

University Physics Volume 2

Physics

ISBN:

9781938168161

Author:

OpenStax

Publisher:

OpenStax

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5. Where in the circuit of Fig. 18–33 is the current the largest, (a), (b), (c), or (d)? Or (e) it is the same at all points? (c) |(b) FIGURE 18-33 + 1.5 V (a) MisConceptual Question 5. (d)